ORCID Profile
0000-0001-9711-9638
Current Organisations
Technische Universiteit Eindhoven
,
University of Leeds, School of Dentistry
,
University of Leeds
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: American Chemical Society (ACS)
Date: 06-02-2020
DOI: 10.1021/ACSMACROLETT.9B01023
Abstract: Dynamic covalent bonds in a polymer network lead to plasticity, reshapability, and potential recyclability at elevated temperatures in combination with solvent-resistance and better dimensional stability at lower temperatures. Here we report a simple one-step procedure for the catalyst-free preparation and intramolecularly catalyzed stress-relaxation of dynamic polyester networks. The procedure is based on the coupling of branched OH-end functional polyesters (functionality ≥ 3) by pyromellitic dianhydride (PMDA) or 2,5-bis(methoxy-carbonyl) benzenesulfonic acid resulting in ester linkages with, respectively, a COOH or a SO
Publisher: American Chemical Society (ACS)
Date: 02-2002
DOI: 10.1021/MA011535V
Publisher: American Chemical Society (ACS)
Date: 17-11-2020
Publisher: American Chemical Society (ACS)
Date: 29-09-2001
DOI: 10.1021/MA010349M
Publisher: Elsevier BV
Date: 2006
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6PY00925E
Abstract: Higher reactivity of activated carbonate (BMSC) enabling polycarbonates based on monomers that are unsuitable for traditional melt polymerization which uses diphenol carbonate (DPC), as demonstrated in the conversion plot.
Publisher: American Chemical Society (ACS)
Date: 08-08-2016
Publisher: Wiley
Date: 17-11-2021
Abstract: We report on the synthesis of monodisperse, flower‐like, liquid crystalline (LC) polymer particles by precipitation polymerization of a LC mixture consisting of benzoic acid‐functionalized acrylates and disulfide‐functionalized diacrylates. Introduction of a minor amount of redox‐responsive disulfide‐functionalized diacrylates (≤10 wt %) induced the formation of flower‐like shapes. The shape of the particles can be tuned from flower‐ to disk‐like to spherical by elevating the polymerization temperature. The solvent environment also has a pronounced effect on the particle size. Time‐resolved TEM reveals that the final particle morphology was formed in the early stages of the polymerization and that subsequent polymerization resulted in continued particle growth without affecting the morphology. Finally, the degradation of the particles under reducing conditions was much faster for flower‐like particles than for spherical particles, likely a result of their higher surface‐to‐volume ratio.
Publisher: American Chemical Society (ACS)
Date: 05-05-2011
DOI: 10.1021/MA200626P
Publisher: American Chemical Society (ACS)
Date: 25-08-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7PY01583F
Abstract: Methacrylic acid oligomers containing a propenyl ω-endgroup were synthesized by CCTP and used as precursors to efficient stabilizers in surfactant-free emulsion polymerization.
Publisher: Wiley
Date: 29-11-2011
DOI: 10.1002/POLA.24403
Publisher: Wiley
Date: 08-07-2009
DOI: 10.1111/J.1600-9657.2009.00797.X
Abstract: Apical barrier formation and root strengthening procedures have been extensively described in the literature. This systematic review attempts to establish where the effects of interventions using multi-visit apexification, single visit apical plug techniques and root strengthening procedures are consistent and where they may vary significantly. To evaluate the relative effectiveness of apexification and apical plug techniques as well as root strengthening procedures for treating traumatized necrotic immature permanent anterior teeth through a systematic review of randomized controlled trials. Reported immediate and/or long-term adverse events and effects of the materials and techniques are also evaluated. Structured electronic and hand search was performed with no restriction on the language of publication. Only randomized controlled trials comparing different apical barrier formation techniques and root strengthening procedures in traumatized necrotic immature anterior teeth were assessed. Two hundred studies were identified but only two were suitable for inclusion. Included studies investigated multi-visit apexification techniques using calcium hydroxide and tricalcium phosphate. There were no eligible studies investigating root strengthening procedures or any other intervention for apical barrier formation in necrotic immature anterior teeth. No reliable information was available on long-term adverse effects of the reported interventions or cost implications. Based on two included studies, there is weak evidence supporting the use of either calcium hydroxide or tricalcium phosphate for apical barrier formation in necrotic immature anterior teeth employing multi-visit apexification techniques. The evidence is insufficient to provide guidelines for practice. There was no reliable evidence on adverse events or long-term effects after the use of calcium hydroxide or tricalcium phosphate justifying caution in their use in apical barrier formation techniques.
Publisher: Elsevier BV
Date: 03-2015
DOI: 10.1016/J.DRUGALCDEP.2014.12.025
Abstract: Opioid misusers have recognized high mortality but the influence of psychiatric comorbidity in excess cause-specific mortality is unclear. Opioid use disorder (OUD) patients were identified in the South London and Maudsley Case Register. Deaths were identified through database linkage to the national mortality dataset. Standard mortality ratios were calculated to compare mortality risk with the general population. Cox and competing risk regression models were used to investigate the effect of psychiatric comorbidity and psychological health on all-cause and cause-specific mortality (respectively) in OUD patients. Of 4837 OUD patients, 176 had died. Mortality rates were substantially higher than the general population (SMR 4.23 95%CI 3.63-4.90). Among those with OUD, comorbid personality disorder (PD) and comorbid alcohol use disorder (AUD) was associated with increased all-cause mortality in all models, including the fully adjusted model, controlling for socio-demographic factors, severity of drug use, risk behaviours and physical health (HR2.15, 95%CI 1.17-3.95 HR2.28, 95%CI 1.54-3.36). AUD was associated with increased risk of fatal overdose (HR2.57, 95%CI 1.26-5.26) and hepatic-related deaths (HR7.26, 95%CI 2.79-18.86). In iduals with OUD and comorbid PD had almost four times greater risk of liver related deaths compared to those without PD (HR3.76, 95%CI 1.21-11.74). Comorbid severe mental illness and poor psychological health were not associated with increased mortality. This study highlights the importance of assessment for PD and AUD in OUD patients in order to identify in iduals at substantially elevated mortality risk to enable a more personalized approach to their medical care.
Publisher: Wiley
Date: 08-1995
Publisher: Wiley
Date: 27-08-2015
DOI: 10.1002/PMH.1307
Publisher: Wiley
Date: 2008
Publisher: Springer Science and Business Media LLC
Date: 19-12-2013
Publisher: American Chemical Society (ACS)
Date: 13-10-2021
Publisher: American Chemical Society (ACS)
Date: 10-09-2009
DOI: 10.1021/MA9007829
Publisher: American Chemical Society (ACS)
Date: 12-2002
DOI: 10.1021/MA020719M
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C0PY00052C
Publisher: Elsevier BV
Date: 03-2003
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2PY20195J
Publisher: American Chemical Society (ACS)
Date: 10-12-2014
DOI: 10.1021/BM5014876
Abstract: Polymers with quaternary ammonium groups such as quaternized poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMAQ) have been used as antimicrobial agents because of their demonstrated good antimicrobial activities against a huge number and types of microbes, although their cytotoxicity is also well-known. In this work block copolymers based on PDMAEMAQ were synthesized containing hydrophobic segments of poly(butyl methacrylate) to improve the antimicrobial activity and glycomonomer units with the aim of decreasing the cytotoxicity of the polymers. Hydrophobic butyl methacrylate (BMA) blocks were chain extended by statistical and block copolymers of DMAEMA and 2-{[(d-glucosamin-2-N-yl)carbonylethyl methacrylate (HEMAGl) glycomonomer of different compositions. In order to find the balance between antimicrobial activity and cytotoxicity, the selectivity index of each polymer was obtained from minimum inhibitory concentrations (MIC) and white and red blood cells toxicity measurements.
Publisher: American Chemical Society (ACS)
Date: 15-08-1998
DOI: 10.1021/MA9802531
Publisher: Wiley
Date: 20-07-2020
DOI: 10.1111/EDT.12576
Publisher: Wiley
Date: 22-06-2020
DOI: 10.1111/EDT.12574
Publisher: Wiley
Date: 17-07-2020
DOI: 10.1111/EDT.12578
Publisher: American Chemical Society (ACS)
Date: 08-1999
DOI: 10.1021/MA990467Y
Publisher: American Chemical Society (ACS)
Date: 07-04-1998
DOI: 10.1021/MA971541K
Publisher: American Chemical Society (ACS)
Date: 26-07-2019
DOI: 10.1021/JACS.9B06750
Abstract: Polypeptide nanoparticles were obtained by the miniemulsion polymerization of
Publisher: Wiley
Date: 12-12-2018
Publisher: American Psychiatric Association Publishing
Date: 02-2015
DOI: 10.1176/APPI.PS.201300448
Abstract: This study aimed to test the hypothesis that mental health-related discrimination experienced by adults receiving care from community mental health teams is associated with low engagement with services and to explore the pathways between these two variables. In this cross-sectional study, 202 adults registered with inner-city community mental health teams in the United Kingdom completed interviews assessing their engagement with mental health services (service user-rated version of the Service Engagement Scale), discrimination that they experienced because of mental illness, and other variables. Structural equation modeling was conducted to examine the relationship of experienced discrimination and service engagement with potential mediating and moderating variables, such as anticipated discrimination (Questionnaire on Anticipated Discrimination), internalized stigma (Internalized Stigma of Mental Illness Scale), stigma stress appraisal (Stigma Stress Appraisal), mistrust in services, the therapeutic relationship (Scale to Assess Therapeutic Relationships), difficulty disclosing information about one's mental health, and social support. Analyses controlled for age, race-ethnicity, and symptomatology. No evidence was found for a direct effect between experienced discrimination and service engagement. The total indirect effect of experienced discrimination on service engagement was statistically significant (coefficient=1.055, 95% confidence interval [CI]=.312-2.074, p=.019), mainly via mistrust in mental health services and therapeutic relationships (coefficient=.804, CI=.295-1.558, p=.019). A 1-unit increase in experienced discrimination via this pathway resulted in .804-unit of deterioration in service engagement. Findings indicate the importance of building and maintaining service users' trust in mental health services and in therapeutic relationships with professionals and countering the discrimination that may erode trust.
Publisher: Wiley
Date: 19-08-2009
DOI: 10.1002/POLA.23560
Publisher: Royal Society of Chemistry (RSC)
Date: 1998
DOI: 10.1039/A807177B
Publisher: Wiley
Date: 13-06-2020
DOI: 10.1111/EDT.12573
Publisher: Wiley
Date: 20-09-2006
DOI: 10.1002/POLA.21662
Publisher: Wiley
Date: 14-05-2012
DOI: 10.1111/J.1600-9657.2012.01146.X
Abstract: Traumatic injuries to the primary dentition present special problems and the management is often different as compared with the permanent dentition. The International Association of Dental Traumatology (IADT) has developed a consensus statement after a review of the dental literature and group discussions. Experienced researchers and clinicians from various specialities were included in the task group. In cases where the data did not appear conclusive, recommendations were based on the consensus opinion or majority decision of the task group. Finally, the IADT board members were giving their opinion and approval. The primary goal of these guidelines is to delineate an approach for the immediate or urgent care for management of primary teeth injuries. The IADT cannot and does not guarantee favorable outcomes from strict adherence to the guidelines, but believe that their application can maximize the chances of a positive outcome.
Publisher: Wiley
Date: 23-01-2003
DOI: 10.1002/POLA.10613
Publisher: American Chemical Society (ACS)
Date: 25-03-2010
DOI: 10.1021/LA904709C
Abstract: Polymeric nanocapsules were synthesized by encapsulating extruded vesicles of dimethyldioctadecyl ammonium bromide (DODAB) using a reversible addition-fragmentation chain transfer (RAFT)-based encapsulation approach. Random copolymers containing acrylic acid and butyl acrylate units were first synthesized by RAFT in solution using dibenzyl trithiocarbonate (DBTTC) as the RAFT agent. These anionic copolymer chains were subsequently adsorbed onto the surface of cationic DODAB vesicles and then chain extended to form a polymeric shell by starved feed emulsion polymerization. Cryogenic transmission electron microscopy (cryo-TEM) characterizations demonstrate the successful formation of nanocapsules.
Publisher: American Chemical Society (ACS)
Date: 26-05-2023
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7PY00226B
Abstract: Gibbsite platelets were successfully encapsulated using a cross-linker in ATRP-mediated starved feed emulsion polymerisation.
Publisher: Wiley
Date: 05-2005
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8PY01156G
Abstract: Vitrimers, which form a bridge between thermosets and thermoplastics, are a class of materials with promising opportunities for modern material innovations.
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/C0SM00020E
Publisher: American Chemical Society (ACS)
Date: 31-03-1999
DOI: 10.1021/MA981707X
Publisher: Wiley
Date: 22-01-2010
DOI: 10.1002/POLA.23858
Publisher: Wiley
Date: 30-07-2018
Abstract: Although the network dynamics and mechanical properties of poly(butylene terephthalate) vitrimers can to some extent be controlled via chemical and physical approaches, it remains a challenge to be able to process PBT vitrimers with the same processing conditions via, for ex le, injection molding as neat PBT. Here, it is shown that the use of protected pentaerythritol as a latent cross-linker and the use of a Zn(II) transesterification catalyst allows for the in situ dynamic network formation in PBT during processing, with a delayed onset of gelation. This process can be controlled by adjusting the processing temperature, (protected) cross-linker content, and the type of protection group. This solvent-free deprotection strategy opens the way to high production rates of PBT vitrimer products via injection molding with the combination of low viscosity during processing and vitrimer characteristics in the final product.
Publisher: American Chemical Society (ACS)
Date: 29-09-2000
DOI: 10.1021/MA0003506
Publisher: American Chemical Society (ACS)
Date: 31-03-2011
DOI: 10.1021/MA100622B
Publisher: American Chemical Society (ACS)
Date: 1996
DOI: 10.1021/JP9614097
Publisher: Elsevier BV
Date: 02-1994
Publisher: Wiley
Date: 26-02-2015
DOI: 10.1111/ADJ.12273
Abstract: This study investigated the frequency, patterns and causes of dental trauma in patients seeking emergency treatment at a dental hospital, and evaluated the impact of an electronic structured injury history form to collect key information. A retrospective audit was undertaken of all emergency presentations at the Royal Dental Hospital of Melbourne from 2009 to 2012. Dental trauma and injury surveillance data were collected and evaluated with reference to the criteria of the Victorian Emergency Minimum Dataset. Statistical analysis included chi-squared and Fisher's exact tests. A total of 88,610 new emergency courses of care were created, with 3642 (4.1%) identified as new dental trauma cases in 3574 patients. A total of 6001 teeth were injured with a mean of 1.7 teeth per patient (range: 1-8 teeth). The improvement of injury surveillance information collected using the electronic form compared with the paper form was statistically significant (p<0.001). The dental trauma findings of this study are consistent with other studies regarding age, gender, location, cause and injury type. This study also confirmed the benefits of electronic collection of dental injury surveillance data that can assist policy planners and health service providers in designing and delivering effective dental injury prevention and management services.
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7PY00468K
Abstract: We demonstrate that particles synthesized by emulsion polymerization using mechanophore-containing PS 46 - b -PAA 142 as stabilizers can be mechanically activated, which further opens up ways for the application of polymer mechanochemistry in aqueous systems.
Publisher: Elsevier BV
Date: 11-2011
Publisher: Wiley
Date: 11-02-2021
DOI: 10.1002/POL.20200768
Abstract: The mechanical properties and network structure of photocurable polymers are strongly dependent on processing conditions. Here it is reported that highly crosslinked acrylate systems undergo unexpected additional post‐curing during DMTA measurements, resulting in an increase in glass‐transition temperature ( T g ). A detailed study of the conditions under which this increase in T g takes place unequivocally shows that a small (0.1%) oscillatory strain applied above T g is responsible for additional cross‐linking reactions. The effect of strain‐induced post‐curing is confirmed by applying post‐curing treatments under oscillatory shear strain in rheological tests. Different acrylate systems were characterized and the results show that the strain induced post‐curing depends on the network structure of the polymer. In polymer networks with an initial high crosslink density the effect is pronounced while in polymers with an initial lower crosslink density no shift in T g is observed.
Publisher: Wiley
Date: 02-2007
Publisher: Wiley
Date: 04-2003
Abstract: Propagation rate coefficients, k p , of N ‐vinylcarbazole in solution have been determined via visible light pulsed‐laser polymerization over a wide temperature range ( E A = 25.3 ± 5 kJ · mol −1 , A = 1.0 × 10 8 L · mol −1 · s −1 ). The k p data set was used to deduce (average) termination rate coefficients via 1 H NMR spectroscopic kinetic experiments and the corresponding Arrhenius parameters ( E A = −8.5 kJ · mol −1 ± 8 kJ · mol −1 ). Temperature dependence of the propagation rate coefficient, k p , in the free radical solution polymerization of NVC. The graph shows the data from 355 and 440 nm initiation as well as data previously obtained by Yamamoto et al. 5 The three sets of data have been analyzed separately (for details see text). magnified image Temperature dependence of the propagation rate coefficient, k p , in the free radical solution polymerization of NVC. The graph shows the data from 355 and 440 nm initiation as well as data previously obtained by Yamamoto et al. 5 The three sets of data have been analyzed separately (for details see text).
Publisher: Wiley
Date: 25-10-2010
Abstract: The mechanistic interpretation of kinetic anomalies in reversible addition-fragmentation chain transfer (RAFT)-mediated polymerization is critically reviewed. The main conclusion of this exercise is that available data do not allow model discrimination between the two prevailing mechanistic schemes, i.e., the slow fragmentation model and the intermediate radical termination model. However, assessment of the rate parameters reveals that the incompatibilities may not be as large as previously reported in literature. Dedicated kinetic studies on model compounds should be performed to shed further light on the seemingly incompatible data that currently exists in literature.
Publisher: Wiley
Date: 12-12-2012
Abstract: It is demonstrated that CCT‐mediated emulsion polymerization can successfully be carried out in a PSPC. Proper molecular weight control is achieved with only minor quantities of a cobalt(II) complex, illustrating the robustness and scalability of CCT. Despite the successful implementation of CCT in the PSPC, differences in the course of the polymerization and the final latex properties (in terms of the PSD/MWD) for batchwise and PSPC operation are observed. Backmixing occurs to some extend in the PSPC, which increases the steady state CCTA concentration in the column. Consequently, a higher chain transfer activity is observed than expected based on the corresponding batch experiments, which affects the course of the polymerization and the final latex properties. magnified image
Publisher: Wiley
Date: 14-03-2012
DOI: 10.1002/PI.4185
Publisher: American Chemical Society (ACS)
Date: 17-06-2009
DOI: 10.1021/LA9012697
Abstract: Anisotropic polymer-inorganic composite latex particles were synthesized by using a RAFT-based encapsulation approach on cationic gibbsite platelets. By using the RAFT agent dibenzyl trithiocarbonate, a series of hipatic living random RAFT copolymers with different combinations of acrylic acid and butyl acrylate units were synthesized. These RAFT copolymers were used as living stabilizers for the gibbsite platelets and chain extended to form a polymeric shell by starved feed emulsion polymerization. Cryo-TEM characterization of the resulting composite latexes demonstrates the formation of anisotropic composite latex particles with mostly one platelet per particle. Monomer feed composition, chain length, and hydrophilic-lipophilic balance of the RAFT copolymer were found to be important factors for the overall efficiency of the encapsulation. Good control over platelet orientation and high encapsulation efficiency were achieved via this route.
Publisher: Wiley
Date: 26-05-2003
Publisher: Wiley
Date: 28-07-2008
DOI: 10.1002/POLA.22898
Publisher: CSIRO Publishing
Date: 2002
DOI: 10.1071/CH02098
Abstract: Catalytic chain transfer polymerization is a very efficient and versatile free-radical polymerization technique for the synthesis of functional macromonomers. The process is based on the ability of certain transition metal complexes, most notably of low-spin CoII complexes such as cobaloximes, to catalyse the chain transfer to monomer reaction. A brief overview is given of the applications and the mechanistic understanding of catalytic chain transfer polymerization.
Publisher: Royal Society of Chemistry (RSC)
Date: 2009
DOI: 10.1039/B904703D
Abstract: Well-defined cysteine-containing synthetic polypeptides were synthesised and the versatility of various chemical reactions on these thiol groups was investigated.
Publisher: American Chemical Society (ACS)
Date: 12-1995
DOI: 10.1021/MA00130A009
Publisher: American Chemical Society (ACS)
Date: 1996
DOI: 10.1021/MA960166D
Publisher: American Chemical Society (ACS)
Date: 28-04-2001
DOI: 10.1021/MA001952S
Publisher: American Chemical Society (ACS)
Date: 11-12-2019
Publisher: American Chemical Society (ACS)
Date: 28-01-2003
DOI: 10.1021/MA021152C
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9PY00819E
Abstract: Employing mechanofluorophores in polymer fractography to obtain new information on force-induced events when analyzed by confocal laser scanning microscopy.
Publisher: Wiley
Date: 12-2007
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1PY00127B
Publisher: Elsevier BV
Date: 08-2003
Publisher: Wiley
Date: 31-01-2002
DOI: 10.1002/POLA.10152
Publisher: American Chemical Society (ACS)
Date: 26-08-2019
Publisher: Elsevier BV
Date: 10-2013
DOI: 10.1016/J.ANNEPIDEM.2013.07.012
Abstract: This study compares polydrug use in national and inner city s les to (1) examine patterns of use underlying different prevalence rates and (2) identify how inner city polydrug use needs targeting in ways not suggested by national research. Latent class analyses on indicators of illicit drug use in the last year, hazardous alcohol use, and cigarette smoking were compared between the inner city 2008-2010 South East London Community Health study (n = 1698) and the nationally representative 2007 Adult Psychiatric Morbidity Survey in England (n = 7403). Multinomial logistic regressions then examined latent class solutions with demographic and socioeconomic factors. Both s les revealed three notably similar classes of polydrug users: a "high-drug" group using multiple substances a "moderate-drug" group using cannabis, alcohol, and cigarettes and a "low-drug" group reporting minimal alcohol and cigarette use. However, South East London Community Health reported lower risks of polydrug use for ethnic minorities but not for more educated participants. Despite higher polydrug use prevalence in the inner city, latent classes of polydrug users were similar between s les. Some demographic and socioeconomic factors differed between the s les, suggesting the need for inner city services to use both local and national data for policy planning.
Publisher: American Chemical Society (ACS)
Date: 23-07-2012
DOI: 10.1021/MA301161U
Publisher: American Chemical Society (ACS)
Date: 1996
DOI: 10.1021/JP962379A
Publisher: Wiley
Date: 12-2016
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1PY00292A
Abstract: A dynamic covalent network using transalkylation of benzyl-DABCO crosslinkers features fast relaxation with a very strong temperature dependence. The network is de-crosslinked by an excess of DABCO.
Publisher: Springer Science and Business Media LLC
Date: 29-05-2014
Publisher: American Chemical Society (ACS)
Date: 19-02-1999
DOI: 10.1021/MA9813587
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2PY20199B
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6PY00225K
Abstract: This paper describes the synthesis of anisotropic polymer–Gibbsite nanocomposites with “muffin-like” morphology via a starved-feed ATRP emulsion polymerisation.
Publisher: American Chemical Society (ACS)
Date: 17-08-2021
Publisher: American Chemical Society (ACS)
Date: 19-02-2010
DOI: 10.1021/MA9027257
Publisher: CSIRO Publishing
Date: 2002
DOI: 10.1071/CH02160
Abstract: In February 2001 the 25th Australasian Polymer Symposium was held at the University of New England in Armidale and was attended by over 200 Australasian and international scientists about a third of these were registered as students. Preceding the conference, a well-attended joint workshop/summer school with the theme of radical polymerization was convened in association with the Cooperative Research Centre for Polymers (CRC-P) and the ARC Key Centre for Polymer Colloids (KCPC).
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5PY00776C
Abstract: Antimicrobial surfaces were obtained from latex particles stabilized with hiphilic block copolymer surfactants containing both quaternary ammonium and carbohydrate groups.
Publisher: American Chemical Society (ACS)
Date: 14-08-2009
DOI: 10.1021/MA9007225
Publisher: American Chemical Society (ACS)
Date: 11-08-2023
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1PY00224D
Publisher: Wiley
Date: 04-2004
Publisher: Wiley
Date: 08-08-2003
DOI: 10.1002/POLA.10894
Publisher: Wiley
Date: 13-03-2012
DOI: 10.1111/J.1600-9657.2012.01125.X
Abstract: Avulsion of permanent teeth is one of the most serious dental injuries, and a prompt and correct emergency management is very important for the prognosis. The International Association of Dental Traumatology (IADT) has developed a consensus statement after a review of the dental literature and group discussions. Experienced researchers and clinicians from various specialties were included in the task group. The guidelines represent the current best evidence and practice based on literature research and professionals' opinion. In cases where the data did not appear conclusive, recommendations were based on the consensus opinion or majority decision of the task group. Finally, the IADT board members were giving their opinion and approval. The primary goal of these guidelines is to delineate an approach for the immediate or urgent care of avulsed permanent teeth.
Publisher: Elsevier BV
Date: 02-2005
Publisher: American Chemical Society (ACS)
Date: 22-06-2021
Publisher: Elsevier BV
Date: 02-2000
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1SM05266G
Publisher: American Chemical Society (ACS)
Date: 21-10-2014
DOI: 10.1021/MA5020462
Publisher: Wiley
Date: 17-03-2023
DOI: 10.1002/POL.20230068
Abstract: Dynamic covalent networks (DCNs) use chemical bonds that break and reform at appropriate processing conditions to allow reconfiguration of the networks. Recently, the acylsemicarbazide (ASC) motif has been added to the repertoire of such dynamic covalent bonds, which is capable of hydrogen bonding as well as dynamic bond exchange. In this study, we show that its sulfur congener, thioacylsemicarbazide (TASC), also acts as a dynamic covalent bond, but exchanges at a slower rate than the ASC moiety. In addition, siloxane‐based DCNs comprising either ASC or TASC motifs or a varying composition of both show tunable relaxation dynamics, which slow down with an increasing amount of TASC motifs. The reduction in stress relaxation goes hand in hand with a reduction of creep in the network and can be tuned by the ASC/TASC ratio. All networks are readily processed using compression molding and dissolve when treated with excess hydrazide in solution. The ability to control network properties and creep in dynamic covalent polymeric networks by small changes in the molecular structure of the dynamic bond allows a generalized synthetic approach while accommodating a wide temperature window for application.
Publisher: Wiley
Date: 17-10-2013
DOI: 10.1111/IPD.12070
Abstract: This study sought to investigate the effect of caries, in association with physiological root resorption, on the pulpal status of human primary molars. Fifty-three mandibular primary molars were obtained from children requiring extractions under general anaesthesia. Following extraction, teeth were split longitudinally and placed in Zamboni's fixative. Teeth were categorised according to i) the depth of caries (less than or greater than halfway through dentine thickness) and ii) the degree of physiological root resorption ( 67% of the root length). Ten-micrometre pulp sections were subject to indirect immunofluorescence using a combination of PGP 9.5 (a general neuronal marker), CD45 (a general neuronal marker), and Ulex europaeus agglutinin I (a marker of vascular endothelium). Image analysis was used to determine the percentage area of staining (PAS) for innervation and immune cells. Marked differences were seen between different s les, but there were no significant differences in mean PAS for PGP 9.5 or CD45 according to the degree of caries or extent of physiological root resorption (two-way anova, P > 0.05). Findings suggest that even if primary molars are undergoing exfoliation, they show comparable caries-induced changes to teeth without physiological root resorption, thus retaining potential for healing and repair.
Publisher: Springer Science and Business Media LLC
Date: 22-07-2013
Publisher: American Chemical Society (ACS)
Date: 20-08-1999
DOI: 10.1021/MA990076J
Publisher: American Chemical Society (ACS)
Date: 17-04-2019
Publisher: CSIRO Publishing
Date: 2007
DOI: 10.1071/CH07214
Abstract: In the present paper, we finalize some threads in our investigations into the effects of chain-length-dependent propagation (CLDP) on radical polymerization kinetics, confirming all our previous conclusions. Additionally, and more significantly, we uncover some unexpected and striking effects of chain-length-dependent chain transfer (CLDTr). It is found that the observed overall rate coefficients for propagation and termination (and therefore the rate of polymerization) are not significantly affected by whether or not chain transfer is chain-length dependent. However, this situation is different when considering the molecular weight distributions of the resulting polymers. In the case of chain-length-independent chain transfer, CLDP results in a considerable narrowing of the distribution at the low molecular weight side of the distribution in a chain-transfer controlled system. However, the inclusion of both CLDP and CLDTr yields identical results to classical kinetics – in these latter two cases, the molecular weight distribution is governed by the same chain-length-independent chain transfer constant, whereas in the case of CLDP only, it is governed by a chain-length-dependent chain transfer constant that decreases with decreasing chain length, thus enhancing the probability of propagation for short radicals. Furthermore, it is shown that the inclusion of a very slow first addition step has tremendous effects on the observed kinetics, increasing the primary radical concentration and thereby the overall termination rate coefficient dramatically. However, including possible penultimate unit effects does not significantly affect the overall picture and can be ignored for the time being. Lastly, we explore the prospects of using molecular weight distributions to probe the phenomena of CLDP and CLDTr. Again, some interesting insights follow.
Publisher: Wiley
Date: 12-1996
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0SM00817F
Abstract: Programmable, narrowly dispersed, 10 micron-sized, liquid crystalline elastomer actuators were first prepared via thiol–ene dispersion polymerization and then deformed in a PVA film, followed by photopolymerization of the residual acrylate groups.
Publisher: American Chemical Society (ACS)
Date: 27-05-1999
DOI: 10.1021/MA9901341
Publisher: American Chemical Society (ACS)
Date: 02-1997
DOI: 10.1021/MA960704M
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/C0PY00054J
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5PY00548E
Abstract: Bio-inspired hiphilic block copolymer surfactants fully derived from amino acids and sugars are synthesised. The materials are successfully employed in the synthesis of polystyrene latexes by emulsion polymerization.
Publisher: Elsevier BV
Date: 03-1995
Publisher: American Psychiatric Association Publishing
Date: 11-2014
DOI: 10.1176/APPI.PS.201300302
Abstract: This study assessed participants' experienced discrimination and their causal attributions, particularly to mental illness or race-ethnicity. In a cross-sectional study, 202 service users with severe mental illnesses were interviewed to assess their reported experiences of discrimination. The Major Experiences of Discrimination Scale assessed major experiences of discrimination and their recency and frequency across 12 life domains and perceived reasons (attributions). The Everyday Experiences of Discrimination Scale assessed ten types of everyday discrimination and attributions for these experiences. Most participants (88%) reported discrimination in at least one life domain, and 94% reported ever experiencing everyday discrimination. The most common areas of major discrimination were mental health care (44%), neighbors (42%), police (33%), employment (31%), and general medical care (31%). The most common attributions for major discrimination were mental illness (57%), race-ethnicity (24%), education or income (20%), or appearance (19%). Almost half (47%) attributed experiences of major discrimination to two or more causes. No differences were found between racial-ethnic groups in overall experienced discrimination or in main attributions to mental illness. However, compared with the mixed and white groups, participants in the black group were most likely to endorse race-ethnicity as a main attribution (p<.001). Mental illness-related discrimination was found to be a common issue across racial-ethnic groups, and discrimination based on race-ethnicity was prevalent for the mixed and black groups. There is a need for antidiscrimination strategies that combine efforts to reduce the experience of discrimination attributed to mental illness and to race-ethnicity for racial-ethnic minority groups.
Publisher: American Chemical Society (ACS)
Date: 30-10-2015
DOI: 10.1021/ACS.LANGMUIR.5B02756
Abstract: We synthesize two differently sized poly(methyl methacrylate-co-tert-butyl acrylate) latexes by emulsion polymerization and mix these with a sonicated single-walled carbon nanotube (SWCNT) dispersion, in order to prepare 3% SWCNT composite mixtures. We spin-coat these mixtures at various spin-speed rates and spin times over a glass substrate, producing a thin, transparent, solid, conductive layer. Keeping the amount of SWCNTs constant, we vary the weight fraction of our smaller 30-nm latex particles relative to the larger 70-nm-sized ones. We find a maximum in the electrical conductivity up to 370 S/m as a function of the weight fraction of smaller particles, depending on the overall solid content, the spin speed, and the spin time. This maximum occurs at 3-5% of the smaller latex particles. We also find a more than 2-fold increase in conductivity parallel to the radius of spin-coating than perpendicular to it. Atomic force microscopy points at the existence of lanes of latex particles in the spin-coated thin layer, while large-area transmission electron microscopy demonstrates that the SWCNTs are aligned over a grid fixed on the glass substrate during the spin-coating process. We extract the conductivity distribution on the surface of the thin film and translate this into the direction of the SWCNTs in it.
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/C0PY00111B
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C0SM01330G
Publisher: Elsevier BV
Date: 11-2011
Publisher: American Chemical Society (ACS)
Date: 05-08-2021
Publisher: Wiley
Date: 09-09-2020
Publisher: American Chemical Society (ACS)
Date: 29-10-2019
Publisher: American Chemical Society (ACS)
Date: 29-08-2002
DOI: 10.1021/MA012214M
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6RA16364E
Abstract: A simple procedure for the encapsulation of unmodified Gibbsite was developed using conventional emulsion polymerization and charged oligomers as stabilisers.
Publisher: American Chemical Society (ACS)
Date: 23-11-2011
DOI: 10.1021/MA2020535
Publisher: Cambridge University Press (CUP)
Date: 17-03-2014
DOI: 10.1017/S2045796014000158
Abstract: To explore the role of psychiatric admission, diagnosis and reported unfair treatment in the relationship between ethnicity and mistrust of mental health services. The Mental Illness-Related Investigations on Discrimination (MIRIAD) study was a cross-sectional study of 202 in iduals using secondary mental health services in South London. Two structural equation models were estimated, one using Admission (whether admitted to hospital for psychiatric treatment in the past 5 years) and one using involuntary admission to hospital in the past 5 years. Increased mistrust was directly associated with the latent variable ‘unfair treatment by mental health services and staff’ and with Black or mixed ethnicity in both models. Those with a diagnosis of schizophrenia spectrum (as compared to depression and bipolar disorder) had a lower average score on the latent variable, suggesting that on average they reported less unfair treatment. We found evidence of increased reporting of unfair treatment by those who had an admission in the past 5 years, had experienced involuntary admission, and for people of Black of mixed Black and White ethnicity. Neither prevalence of schizophrenia spectrum nor rates of hospital admission explained the greater mistrust of mental health services found among people of Black and mixed Black and White ethnicity compared with White ethnicity. Rather, people of Black and mixed Black and white ethnicity may be more likely to experience unfair treatment, generating mistrust furthermore, this group is more likely to express mistrust even after accounting for reporting of unfair treatment by mental health services and staff.
Publisher: Wiley
Date: 04-04-2012
Abstract: The ability of merging the properties of poly(2-oxazoline)s and poly(ethylene imine) is of high interest for various biomedical applications, including gene delivery, biosensors, and switchable surfaces and nanoparticles. In the present research, a methodology for the controlled and selective hydrolysis of (co)poly(2-oxazoline)s is developed in an ethanol-water solvent mixture, opening the path toward a wide range of block poly(2-oxazoline-co-ethylene imine) (POx-PEI) copolymers with tunable properties. The unexpected influence of the selected ethanol-water binary solvent mixture on the hydrolysis kinetics and selectivity is highlighted in the pursue of well-defined POx-PEI block copolymers.
Publisher: Wiley
Date: 06-04-2005
DOI: 10.1002/POLA.20673
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Peter Francis Day.