ORCID Profile
0000-0003-0862-9631
Current Organisation
RMIT University
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Textile Technology | Manufacturing Engineering | Functional Materials |
Natural Fibres, Yarns and Fabrics | Synthetic Fibres, Yarns and Fabrics | Preference, Behaviour and Welfare
Publisher: Springer Science and Business Media LLC
Date: 31-08-2022
Publisher: Elsevier BV
Date: 02-2019
Publisher: Elsevier
Date: 2021
Publisher: Wiley
Date: 28-10-2023
DOI: 10.1002/PAT.6222
Publisher: Wiley
Date: 25-02-2008
DOI: 10.1002/APP.27738
Abstract: In this study, superfine wool powder was plasticized with glycerol and hot‐pressed into a film. Scanning electron microscopy photos showed that the superfine wool powder could be molded into a smooth film and that the wool powder was distributed evenly in the cross section of the film. Fourier transform infrared analysis revealed no substantial changes in the chemical structure of the wool powder after hot pressing, but the absorbing peaks of glycerol were found in the spectrum. X‐ray diffraction analysis showed that the overall crystallinity increased after the wool powder was hot‐pressed into film. Thermogravimetry (TG) analysis indicated that the thermal stability of the hot‐pressed film decreased. A transition point appeared in the TG curve of the wool hot‐pressed film as glycerol was added. The differential thermal analysis curve of the film showed sharp absorbing peaks similar to that of wool powder. With increasing glycerol content, the film showed increasing ductility and softness. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008
Publisher: Springer Science and Business Media LLC
Date: 04-08-2016
Publisher: Elsevier BV
Date: 10-2019
DOI: 10.1016/J.JTHERBIO.2019.102416
Abstract: Surface functionalization of fibers is widely used to grant performance or functions to textiles. Modified textile surface, with different morphology and wettability together with different thermal conductivity, has a profound effect on the wellbeing of wearer, because the thermal and moisture transfer of the surface-modified textiles in dynamic moving conditions is totally different to unmodified ones. To benefit the design of performance/functional textiles with enhanced wellbeing of wearer, it is important to understand the dynamic thermal and mass transfer of textiles before and after surface modification. Using wool as a s le fiber, this work reveals the effect of typical surface modification on the dynamic thermal and moisture transfer of wool fabrics. It has been found that the surface characters of wool fiber change after surface modification with etched and peeled off scales, enhanced water absorbing capacity and wettability. The surface temperature of modified wool fabrics was lower than pristine wool fabrics when attaching to a rotating hotplate with a temperature of 35 °C, resulting in a lower energy consumption of the hotplate and enhanced warmth retention rate. Modified wool fabrics took longer time to accomplish the dynamic moisture transfer process with a longer stage three in the transfer cycle. This work will provide insights on how the surface of fiber affects the dynamic thermal and moisture transfer of textiles, which will further benefit the development of functional erformance clothing with its comfort well maintained.
Publisher: Trans Tech Publications, Ltd.
Date: 10-2014
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.1048.26
Abstract: Different spinnerets can be used to generate needleless electrospinning with the potential to scale up the production of nanofibers. However, the electrospinning performance, normally refers to the quality of the as-spun fiber and the production rate, is dramatically different from different spinnerets. This study focuses on the electric field of different spinnerets under the same experimental parameters so as to understand the key factors that affect the electrospinning performance of upward needleless electrospinning. Modeling analysis suggested that the electric field could be further concentrated by optimizing the geometry of spinneret. Experimental investigation on needleless electrospinning from different spinnerets proved that the electrospinning performance was improved greatly with the optimization of the electric field of spinneret. Understanding of the relationship between electric field and spinning performance would benefit the design and development of needleless electrospinning.
Publisher: Elsevier BV
Date: 10-2012
Publisher: Springer Science and Business Media LLC
Date: 30-10-2012
DOI: 10.1557/JMR.2012.346
Publisher: Springer Science and Business Media LLC
Date: 23-11-2019
Publisher: Elsevier BV
Date: 02-2023
Publisher: Emerald
Date: 02-10-2009
DOI: 10.1108/09556220910983777
Abstract: The purpose of this paper is to present a dynamic analysis on the thermal and electrical properties of fabrics under wet conditions. A purpose‐built apparatus is applied to test the thermal and electrical properties of textiles in moisture absorption and liberation process. Relation between temperature and resistance of a cotton olyester double‐layer fabric is also analysed. The surface temperature of textiles shows three different stages in the process. The electrical resistance is linearly related to the reciprocal of the moisture regain of fabrics. In the moisture absorption and liberation process, surface temperature of cotton layer is higher than that of polyester layer. And the electrical resistance of cotton layer decreases more quickly than that of polyester layer. The electrical resistance changes earlier than surface temperature in the moisture‐liberation process. The paper is helpful in not only the designing of sportswear, but also the devising of moisture‐testing apparatus. A dynamic testing method is applied to characterize the thermal and electrical properties of textiles.
Publisher: Elsevier BV
Date: 2016
DOI: 10.1016/J.JTHERBIO.2015.11.005
Abstract: The thermal and moisture behaviour of the microclimate of textiles is crucial in determining the physiological comfort of apparel, but it has not been investigated sufficiently due to the lack of particular evaluation techniques. Based on sensing, temperature controlling and wireless communicating technology, a specially designed tester has been developed in this study to evaluate the thermal and moisture behaviour of the surface of textiles in moving status. A temperature acquisition system and a temperature controllable hotplate have been established to test temperature and simulate the heat of human body, respectively. Relative humidity of the surface of fabric in the dynamic process has been successfully tested through sensing. Meanwhile, wireless communication technology was applied to transport the acquired data of temperature and humidity to computer for further processing. Continuous power supply was achieved by intensive contact between an elastic copper plate and copper ring on the rotating shaft. This tester provides the platform to evaluate the thermal and moisture behaviour of textiles. It enables users to conduct a dynamic analysis on the temperature and humidity together with the thermal and moisture transport behaviour of the surface of fabric in moving condition. Development of this tester opens the door of investigation on the micro-climate of textiles in real time service, and eventually benefits the understanding of the sensation comfort and wellbeing of apparel wearers.
Publisher: American Chemical Society (ACS)
Date: 18-06-2020
Publisher: Elsevier
Date: 2021
Publisher: Springer Science and Business Media LLC
Date: 27-02-2019
Publisher: SAGE Publications
Date: 11-08-2010
Abstract: In this study, Photoshop software was used to do image analysis on the photos of spun yarns. The result showed that yarn could be ided into two parts: the surface hairs and the stem. Based on this finding, a mathematical model of yarn unevenness was built to analyze the relationship between yarn unevenness and surface hairiness. The relationships among the coefficients of mass variance of the yarn, the stem and the surface hairs, expressed as CV t , CV s and CV h , respectively, were investigated in detail. Results indicate that the CV s of an uneven yarn always coincides with the irregularity of the yarn hairiness. More specifically, the CV t of a yarn cannot be better than those of both yarn hairiness and stem (CV h and CV s ), even if one of them is excessive. It is rare for CV t to be higher than CV s after removal of yarn hairs. In particular, it is irrational for the CV t value to be higher than both CV s and CV h , which prompts a rethinking of the exact distribution of yarn hairs on the yarn body.
Publisher: Wiley
Date: 13-12-2019
Publisher: Informa UK Limited
Date: 23-05-2021
Publisher: Wiley
Date: 14-05-2007
Publisher: Elsevier BV
Date: 12-2020
Publisher: American Chemical Society (ACS)
Date: 15-02-2023
Publisher: SAGE Publications
Date: 10-2017
DOI: 10.1177/096739111702500809
Abstract: Silver nanoparticles (AgNPs) were deposited onto surface-hydrolysed PET film by an electrostatic self-assembly technique, so as to fabricate multilayer nanocomposite films. The self-assembly process was monitored by ultraviolet-visible (UV-Vis) spectroscopy. The surface morphology and chemical composition of the multilayer nanocomposite films were characterised by Field Emission Scanning Electron Microscopy (FESEM), atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). The results showed that the AgNPs were uniformly dispersed on the PET film, in the metallic silver state. The thermal stability of the multilayer nanocomposite films was investigated by thermogravimetric analysis (TGA), and it was found that the presence of AgNPs on the surface of PET enhanced the thermal stability of the PET film. The antibacterial performance of the multilayer nanocomposite films was investigated by staphylococcus aureus to monitor the number of the bacterial cells. The results suggested that the PET films after assembled 10-bilayer PDDA/AgNPs multilayer films exhibited good antibacterial performance.
Publisher: Walter de Gruyter GmbH
Date: 30-04-2016
Publisher: Elsevier BV
Date: 11-2019
Publisher: Wiley
Date: 29-05-2019
DOI: 10.1002/APP.48014
Publisher: American Chemical Society (ACS)
Date: 12-07-2023
Publisher: American Chemical Society (ACS)
Date: 07-11-2019
Abstract: Polypropylene (PP) surgical mesh has attracted vast attention due to its chemical inertness and excellent mechanical properties. However, improvement is necessary to enhance its biocompatibility and to prevent unwanted tissue adhesion. This study addresses these issues through surface modification of plasma-activated PP mesh with a 2-methacryloyloxyethyl phosphorylcholine (MPC) polymer. Reaction time and monomer concentration have been optimized to achieve the optimal biocompatibility with reduction in protein adsorption. Attenuated total reflection-Fourier transform infrared spectra confirmed the grafting of the MPC polymer (PMPC) to the plasma-activated polypropylene (PPP) mesh. Scanning electron microscopy images and energy-dispersive X-ray (EDX) line spectra exhibited morphological changes and specifically PMPC grafting to the surface of PPP mesh, due to the presence of a significant amount of phosphorus (P) on the grafted PPP mesh. PMPC-grafted polypropylene (PPP-PMPC) showed a significant reduction in contact angle as well as the amount of adsorbed bovine serum albumin (BSA) protein in comparison with pristine PP mesh. The highest reduction in protein adsorption and the lowest contact angle were achieved at the monomer concentration of 0.3 M and the reaction time of 90 min. A longer reaction time and higher monomer concentration resulted in clogging within the mesh pores. MTT assay results (∼90% cell viability) confirmed the nontoxicity of the PMPC-grafted mesh, while optical microscopic and SEM images showed increased resistance of cell attachment to the surface of PMPC-grafted mesh. The results show that PPP-PMPC can be a promising biomaterial to address the current issues in biocompatibility and reduction in adhesion after surgery.
Publisher: Emerald
Date: 11-2008
DOI: 10.1108/RJTA-12-04-2008-B002
Abstract: Fibers based regenerated protein draw much attention for recycling discarded protein resources and can produce biodegradable and environmental friendly polymers. In this study, superfine wool powder is blended with polypropylene (PP) to produce wool powder/PP blend film through extrusion and hot-pressing. Hydrogen peroxide is used to bleach the black colored surface of the blend films. The effects of peroxide concentration, bleaching time and powder content on the final whiteness and mechanical properties of the blend films are investigated. The bleached films are dyed with acid red dyes and the dyed color is evaluated using a Computer Color Matching System. Color characters of dyed films, such as L * , a * , b*, ΔE * ab, C * ab and K/S values are measured and analyzed. The study not only reuses discarded wool resources into organic powder, widens the application of superfine wool powder on polymers, but also improves the dyeing properties of PP through the addition of protein content.
Publisher: SAGE Publications
Date: 28-04-2009
Abstract: In this study, electrical resistances of different fabrics were indirectly tested on a purpose-built apparatus so as to investigate the effects of fiber materials, moisture regain, testing distances, and electrolyte concentration on the electrical resistance of textiles. Fabrics made from different fiber materials show different values of electrical resistance. Regression analysis shows the electrical resistance to be linearly related to the reciprocal of the moisture regain of fabric. The electrical resistance rises linearly with the increase of testing distance on fabric. Regression analysis also suggests the electrical resistance of fabrics is exponentially related to the electrolyte concentration. In this way, the relationship between electrical properties and moisture of textiles is analysed, which not only provides a theoretical analysis of moisture testing techniques, but also is helpful in exploring electrical-moisture textile apparatus and the designing of moisture absorbent and perspiration textiles.
Publisher: Wiley
Date: 20-05-2009
DOI: 10.1002/PEN.21377
Publisher: American Chemical Society (ACS)
Date: 21-06-2022
Publisher: Springer Science and Business Media LLC
Date: 23-05-2021
Publisher: Elsevier BV
Date: 12-2019
Publisher: Elsevier BV
Date: 03-2020
Publisher: Springer Science and Business Media LLC
Date: 23-02-2018
Publisher: Springer Science and Business Media LLC
Date: 03-2019
Publisher: SAGE Publications
Date: 26-05-2015
Abstract: Mass production of nanofibers from needleless electrospinning shows great potential in research and development of nanofibers. However, how to improve the electrospinning performance so as to achieve high quality nanofibers is still of great challenge. In this study, airflow has been applied to optimize upward needleless electrospinning from ring spinneret. Effects of airflow speed and the position of airflow on the nanofiber quality and production rate have been investigated. It has been found that thinner and more uniform nanofibers were produced when airflow was applied to needleless electrospinning system. It also improved the collected nonwoven membrane, resulting in better nanofibrous structure of the as-spun nanofibers. Application of airflow on needleless electrospinning would further benefit the development of mass production of nanofibers from needleless electrospinning.
Publisher: MDPI AG
Date: 30-11-2017
DOI: 10.3390/POLYM9120660
Publisher: SAGE Publications
Date: 07-03-2012
Abstract: In this study, we compared fiber trapping of embeddable and locatable spinning (ELS) with that of sirofil and siro core-spinning with flute pipe air suction. Online pictorial analysis showed that the 3rd ELS was free of the visual fiber loss during the 1st ELS, 2nd ELS, sirofil, and siro core-spinning. This indicated the 3rd ELS possessed high ability of trapping staple fibers. Weight loss of different yarns proved that the 3rd ELS had a statistically higher fiber trapping capacity than 1st ELS, sirofil and siro core-spinning. Yarn visual appearance results showed that filaments failed to be entirely buried in the siro core-spun yarn body due to the staple fiber loss and imperfect filament tension adjustment. Poor trapping and filament fasting of staple fibers might be the reasons for more hairy siro core-spun yarn than other composite yarns. Sirofil and siro core-spun yarn had higher value of coefficient of mass variation per unit yarn length and yarn imperfections than the 3rd ELS yarn which might be probably due to their irregular fiber loss during the sirofil and siro core-spinning. The fiber loss would result in a decrease in yarn cross-section fiber utilization therefore, sirofil, siro core-spun and the 1st ELS yarn had a statistically lower tensile tenacity than the 3rd ELS composite yarn.
Publisher: Springer Science and Business Media LLC
Date: 06-2008
Publisher: MDPI AG
Date: 03-05-2018
Publisher: Springer Science and Business Media LLC
Date: 09-12-2017
Publisher: Emerald
Date: 23-07-2018
DOI: 10.1108/IJCST-10-2017-0164
Abstract: Clothing is subject to a dynamic thermal transport process in its routine service in which the apparel and human body together with environment interact with each other. Understanding of the thermal transfer in this case should take the variations of human body and environment together with clothing attributes into consideration. The paper aims to discuss these issues. Based on the purpose-built dynamic thermal and moisture tester, this study focuses on the thermal transfer of fabrics in different rotational motions. The energy consumption and power of the simulated human skin, the temperature and the thermal retention rate were monitored in the process of rotation of the testing platform with gradually increased rotating speed. It has been found that the thermal transfer of a rotating fabric is greatly affected by the rotating speed, the angle of the fabric toward the moving direction and the attributes of the fabric such as its thickness, layers, structure and its fiber composition. This study will benefit the understanding of the dynamic thermal interaction of human with the environment, and the designing of clothing with excellent thermal comfort. This work reveals the dynamic thermal transfer of fabrics in rotational motions. It provides a platform to study the dynamic thermal behavior of clothing in daily use.
Publisher: Springer Science and Business Media LLC
Date: 2018
Publisher: Trans Tech Publications, Ltd.
Date: 10-2014
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.1048.62
Abstract: In this paper, we reported a bending fatigue testing apparatus which can test the bending fatigue properties of single Nomex fiber by setting the pretension, bending angle and temperature. The S-N and θ-N curves indicated that the pre-tension and bending angle had great influences on the bending fatigue life of Nomex fiber. A CCD camera was utilized to allow observation of the bending fatigue fracture morphology of fiber. It showed the fracture mechanism of Nomex fibers. The bending fatigue life of Nomex fiber was tested at different temperatures to show that its bending fatigue strength is strongly influenced by the temperature.
Publisher: Hindawi Limited
Date: 2012
DOI: 10.1155/2012/785920
Abstract: Polyvinyl alcohol nanofibers were prepared by a needleless electrospinning technique using a rotating spiral wire coil as spinneret. The influences of coil dimension (e.g., coil length, coil diameter, spiral distance, and wire diameter) and operating parameters (e.g., applied voltage and spinning distance) on electrospinning process, nanofiber diameter, and fiber productivity were examined. It was found that the coil dimension had a considerable influence on the nanofiber production rate, but minor effect on the fiber diameter. The fiber production rate increased with the increased coil length or coil diameter, or the reduced spiral distance or wire diameter. Higher applied voltage or shorter collecting distance also improved the fiber production rate but had little influence on the fiber diameter. Compared with the conventional needle electrospinning, the coil electrospinning produced finer fibers with a narrower diameter distribution. A finite element method was used to analyze the electric field on the coil surface and in electrospinning zone. It was revealed that the high electric field intensity was concentrated on the coil surface, and the intensity was highly dependent on the coil dimension, which can be used to explain the electrospinning performances of coils. In addition, PAN nanofibers were prepared using the same needleless electrospinning technique to verify the improvement in productivity.
Publisher: Elsevier BV
Date: 09-2021
Publisher: Elsevier BV
Date: 02-2020
Publisher: Elsevier BV
Date: 07-2015
Publisher: Springer Science and Business Media LLC
Date: 22-06-2011
Publisher: Wiley
Date: 02-01-2020
DOI: 10.1002/JBM.A.36868
Abstract: The biocompatibility of materials is the determining factor for them to be applied in biomedical areas. Nanodiamond (ND) has gained increasing interest in this area due to its biocompatibility, ease of surface functionalization and excellent mechanical performance. ND has been widely used to reinforce biopolymers, and the resultant biocomposites have found applications in bone tissue engineering, chemotherapeutic drug delivery, and wound healing. Fluorescent ND, when combined with biopolymers, is serving for bioimaging and sensing applications. Herein, we contribute a description of ND, recent trends in its adoption for biopolymers, functionalization methods, amalgamation techniques of ND with biopolymers, potential applications of these composites in the biomedical field and future perspectives.
Publisher: SAGE Publications
Date: 03-11-2010
Abstract: A novel spinning method: embeddable and locatable spinning, is reported for the first time in this paper. Analysis of the key restrictions of the conventional and some novel ring-spinning were studied evolvement and principles of embeddable and locatable spinning were then introduced. Analysis indicated that embeddable and locatable spinning could overcome the existing restrictions of ring spinning and improve the spinning performance of fiber strands as well as the quality of the resulting yarn. Super-fine and colorful figured yarns could be produced successfully, and most fibers shorter than can be spun in traditional spinning could be well embedded into a yarn by embeddable and locatable spinning method even staple fibers of low qualities could be used to produce a fine yarn of high qualities in the novel spinning system. This novel spinning method shows huge application potentials in textile industry by improving the yarn quality, developing super-fine yarn, and increasing fiber utilization rate.
Publisher: Elsevier BV
Date: 02-2020
Publisher: Springer Science and Business Media LLC
Date: 31-05-2019
Publisher: Springer Science and Business Media LLC
Date: 29-09-2020
Publisher: SAGE Publications
Date: 18-09-2009
Abstract: In this study, combed ring spun and compact spun cotton yarns with different counts were selected from different textile mills to conduct singeing treatment. Yarn properties including hairiness, fineness, unevenness and tensile properties were tested after the treatment and the results were compared with those before treatment. Hairiness was greatly removed after singeing, especially for short hairs with length less than 3 mm. Compact ring spun cotton yarns showed higher tex values and lower weight loss than combed ring spun cotton yarns under the same counts. Coefficient of variation of yarns increased slightly after singeing treatment. The unevenness of yarn was ided into two parts: basic unevenness of yarn body and hairiness unevenness, to explain the worse yarn evenness after singeing treatment. In this way, the effect of singeing on yarn properties was investigated thoroughly so as to improve yarn quality with less hairiness and good evenness.
Publisher: Elsevier BV
Date: 11-2021
Publisher: Springer Science and Business Media LLC
Date: 11-2014
Publisher: American Chemical Society (ACS)
Date: 06-03-2021
Publisher: Informa UK Limited
Date: 13-10-2022
Publisher: Elsevier BV
Date: 02-2020
Publisher: Springer Science and Business Media LLC
Date: 14-08-2019
Publisher: Wiley
Date: 16-07-2009
DOI: 10.1002/APP.30837
Publisher: Springer Science and Business Media LLC
Date: 13-04-2020
Publisher: Wiley
Date: 11-11-2009
DOI: 10.1002/APP.29205
Publisher: Wiley
Date: 12-02-2009
DOI: 10.1002/APP.29573
Publisher: Elsevier BV
Date: 2023
Publisher: American Chemical Society (ACS)
Date: 11-09-2020
Publisher: Springer Science and Business Media LLC
Date: 15-07-2022
Publisher: Wiley
Date: 22-09-2012
DOI: 10.1002/APP.35044
Publisher: Springer Science and Business Media LLC
Date: 02-2019
Publisher: Society of Fiber Science and Technology Japan
Date: 2006
DOI: 10.2115/FIBER.62.111
Publisher: Springer Science and Business Media LLC
Date: 21-07-2020
Publisher: Elsevier BV
Date: 02-2019
Publisher: Informa UK Limited
Date: 11-10-2019
Publisher: Wiley
Date: 10-02-2022
Abstract: The development of cooling textiles has a significant impact on energy saving and cost‐effectiveness in the context of global warming. Engineering textiles with cooling performance while maintaining their intrinsic traits, for ex le, lightweight, washable, comfort, and durability, is a great challenge in developing personal cooling garments. Here, the synthesis of nanodiamond olydopamine/wool (ND‐PDA‐wool) nanocomposites through a facile dip‐coating approach is demonstrated. Different types of ND including detonation ND (DND), carboxylated ND (ND‐COOH) and hydroxylated ND (ND‐OH), are used, and dopamine templating is applied to achieve strong adhesion and bonding between fiber and ND. The morphology, structure, and properties of the as‐coated fabrics are characterized, and the cooling performance together with comfort are measured. Due to the excellent thermal conductivity of ND, the temperature difference between the coated fabrics and uncoated ones is around 2.4–3.9 °C within a short time span of 30 min. The coated ND‐PDA‐Wool fabrics demonstrated enhanced thermal stability and improved mechanical properties with excellent durability, and the water absorbency is greatly enhanced with well‐maintained air permeability. ND‐PDA‐wool composite fabrics offer a strategy to develop durable, lightweight, washable, and comfortable cooling textiles with immense potential in energy saving and reducing space cooling costs.
Publisher: Emerald
Date: 27-06-2019
DOI: 10.1108/IJCST-11-2018-0133
Abstract: The mass transfer of textiles during movement is complicated as the energy consumption (EC) from skin, surface temperature of fabrics together with environment will work synergistically to determine the sensation and comfort of wearer. The purpose of this paper is to reveal the mass transfer in the human-textile-environment dynamic system. With a simulated hotplate mounted on a rotational testing platform, this paper focuses on the dynamic mass transfer of a fabric so as to simulate the real-time mass transfer of clothing in movements. It has been found that the EC and surface temperature ( T ) change against testing time, indicating the convex and concave shapes of the EC– t and T – t curves. The initial moisture regain of the fabric, rotational speed of the platform and the fiber materials of the fabric have shown a great effect on the dynamic mass transfer process. Understanding the dynamic mass transfer of textiles will benefit the design of clothing with better comfort and will contribute to the well-being of wearers. This work reveals the dynamic mass transfer of textiles in rotational movements. It contributes a new approach to studying the mass transfer of clothing in real service.
Publisher: Informa UK Limited
Date: 10-11-2018
Publisher: Springer Science and Business Media LLC
Date: 09-2006
DOI: 10.1007/BF02875681
Publisher: Springer Science and Business Media LLC
Date: 07-09-2017
Publisher: Emerald
Date: 11-11-2013
DOI: 10.1108/IJCST-05-2012-0023
Abstract: – In this study, a novel dynamic testing method was established to measure the moisture variation of fabric surface during the process of moisture liberation in simulated windy condition. The paper aims to discuss these issues – In this method, the s les were rotating during the test process so as to simulate the external windy environment. Effects of simulated wind speed, moisture regains and fabric materials on the surface moisture of fabric were investigated. – Experimental results showed that the surface moisture presented a trapezoidal moisture liberation curve, it increased at first, then kept stable for a while, and decreased finally with the increase of time. It took longer time for the fabric to complete the liberation process when the moisture regain of the fabric increased or the simulated wind speed decreased. The fiber materials of the fabric affected the time for the moisture liberation process under a specific windy condition. – This study will benefit the designing and development of clothing such as sportswear. – A dynamic testing method was proposed to characterize the surface humidity of textiles under simulated windy conditions.
Publisher: American Chemical Society (ACS)
Date: 23-01-2019
Abstract: Flexible wearable devices for various applications have attracted research attention in recent years. To date, it is still a big challenge to fabricate strain sensors with a large workable strain range while maintaining their high sensitivity. Herein, we report the fabrication of highly sensitive wearable strain sensors from braided composite yarns (BYs) by in situ polymerization of polypyrrole (PPy) on the surface of yarns after polydopamine templating (BYs-PDA). The electromechanical performance and strain sensing properties of the fabricated braided composite yarn@polydopamine@polypyrrole (BYs-PDA-PPy) were investigated. Because of the unique braided structure of BYs, the BYs-PDA-PPy strain sensors exhibit fascinating performance, including a large workable strain range (up to 105% strain), high sensitivity (gauge factor of 51.2 in strain of 0%-40% and of 27.6 in strain of 40%-105%), long-term stability and great electrical heating performance. Furthermore, the BYs-PDA-PPy sensors can be used in real-time monitoring subtle and large human motions. The BYs-PDA-PPy strain sensors can also be woven into fabrics for large area electric heating. These results demonstrate the potential of BYs-PDA-PPy in wearable electronics.
Publisher: Elsevier BV
Date: 10-2018
Publisher: Springer Science and Business Media LLC
Date: 13-07-2019
Publisher: MDPI AG
Date: 15-03-2018
Publisher: American Chemical Society (ACS)
Date: 04-09-2018
Abstract: Incorporation of carbon nanotubes (CNTs) into textiles without sacrificing their intrinsic properties provides a promising platform in exploring wearable technology. However, manufacture of flexible, durable, and stretchable CNT/textile composites on an industrial scale is still a great challenge. We hereby report a facile way of incorporating CNTs into the traditional yarn manufacturing process by dipping and drying CNTs into cotton rovings followed by fabricating CNT/cotton/spandex composite yarn (CCSCY) in sirofil spinning. The existence of CNTs in CCSCY brings electrical conductivity to CCSCY while the mechanical properties and stretchability are preserved. We demonstrate that the CCSCY can be used as wearable strain sensors, exhibiting ultrahigh strain sensing range, excellent stability, and good washing durability. Furthermore, CCSCY can be used to accurately monitor the real-time human motions, such as leg bending, walking, finger bending, wrist activity, clenching fist, bending down, and pronouncing words. We also demonstrate that the CCSCY can be assembled into knitted fabrics as the conductors with electric heating performance. The reported manufacturing technology of CCSCY could lead to an industrial-scale development of e-textiles for wearable applications.
Publisher: Wiley
Date: 03-06-2021
DOI: 10.1002/JBM.A.37237
Abstract: Polypropylene (PP) mesh is most commonly used for the treatment of hernia and pelvic floor construction. However, some of the patients have a few complications after surgery due to the rejection or infection of the implanted meshes. The poor biocompatibility of PP mesh, low wettability results in poor cell attachment roliferation and restricts the loading of antibacterial agent, leading to a slow healing process and high risk of infection after surgery. Here in this study, a new technique has been employed to develop a novel antimicrobial and biocompatible PP mesh modified with bioactive chitosan and functionalized nanodiamond (FND) for infection inhibition and acceleration of the healing process. An oxygen plasma treatment PP mesh was used then chitosan was strongly attached to the surface of the PP fibers. Subsequently, FND as an antibacterial agent was loaded into the chitosan modified PP fiber to provide desired antibacterial functions. The meshes were characterised with XRD, FTIR, SEM, EDX, water contact angle, confocal, and optical microscopy. The modified PP mesh with chitosan and FND showed a significant increase in its hydrophilicity and L929 fibroblast cell attachment. Furthermore, the modified mesh exhibited great antibacterial efficiency against Escherichia coli . Therefore, the newly developed technique to modify PP mesh could be a promising technique to generate a biocompatible PP mesh to accelerate the healing process and reduce the risk of infection after surgery.
Publisher: Elsevier BV
Date: 2022
Publisher: Wiley
Date: 09-08-2016
DOI: 10.1002/JBM.A.35851
Abstract: The physical, chemical, and bioactive cues provided by biomaterials are critical for spinal cord regeneration following injury. In this study, we investigated the bioactivity of a silk-based scaffold for nerve tissue remodeling that featured morphological guidance in the form of ridges as well as bioactive molecules. Multichannel/laminin (LN) silk scaffolds stimulated growth, development, and the extension of primary hippoc al neurons after 7 days of culture in vitro. And then, the multichannel/LN silk scaffolds were implanted into 2-mm-long hemisection defects in Sprague-Dawley rat spinal cords for 70 days to evaluate their bioactivities of spinal cord remolding. Our results demonstrated that animal behavior was significantly improved in the multichannel/LN group, as evaluated by Basso-Beattie-Bresnahan score, whereas the implantation of multichannels and random pores groups resulted in recurring limps. Moreover, histology and immunohistochemical staining revealed an increase in blood vessels and expression of growth associated protein-43 and neurofilament-200 as well as reduced expression of glial fibrillary acidic protein in the multichannel/LN group, which contributed to the rebuilding of spinal cord defects. Thus, multichannel/LN silk scaffolds mediated cell migration, stimulated blood capillary formation, and promoted axonal extension, suggesting the utility of these scaffolds for spinal cord reconstruction. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 104A: 3045-3057, 2016.
Publisher: Elsevier BV
Date: 10-2021
Publisher: Wiley
Date: 05-12-2013
DOI: 10.1002/APP.40205
Publisher: SAGE Publications
Date: 30-03-2022
DOI: 10.1177/15280837221078535
Abstract: This research aims to develop chemical protective clothing via a functionalised surface coating on cotton fabric for simultaneous barrier performance and thermal comfort. An omniphobic protective layer on the cotton fabric was developed through a polyurethane – superabsorbent polymer – fluoropolymer coating to protect the penetration of water, oils and liquid chemicals. It was found that the padding of coated specimens with fluoropolymer provided a substantial improvement of hydrophobicity, and therefore, exhibited a high-water contact angle (114.06°) and a maximum water repellency rating of 100. The highest aqueous liquid repellency (8.0) and satisfactory oil repellency (7.5) with resistance against liquid chemical penetration were also achieved after the treatment with fluoropolymer. Moreover, the coated fabrics integrated with superabsorbent polymer showed an improved dry heat resistance and moisture vapour transmittance, consequently a high evaporative cooling index to create a favourable thermal comfort between the skin and the apparel in hot and humid conditions. Other comfort parameters, including air permeability and moisture management performance were compromised to a certain level due to a continuous and hydrophobic barrier layer on the fabric surface that hindered the transferring of air and liquid sweat through the coating.
Publisher: Wiley
Date: 10-05-2017
DOI: 10.1111/COTE.12283
Publisher: Wiley
Date: 11-09-2015
DOI: 10.1111/COTE.12165
Publisher: SAGE Publications
Date: 26-07-2014
Abstract: Concentrated electric field is crucial in generation of needleless electrospinning, the electric field profile together with electric field strength of the spinneret affect the needleless electrospinning performance directly. Understanding the electric field of spinneret would definitely benefit the designing and optimization of needleless electrospinning. Based on the software COMSOL Multiphysics 3.5a, 3D finite element analysis has been used to analyze the electric field profile and electric field strength of a ring spinneret for needleless electrospinning. The electric field profile shows that strong electric field concentrates on the top of the ring with intensity higher than 70 kV/cm. The electric field of ring spinneret is greatly affected by the geometry of the ring and other experimental parameters such as applied voltage and collecting distance. The electric field analysis introduced in this study will be helpful in selecting proper spinneret and scaling up the production rate of nanofibers in needleless electrospinning.
Publisher: Springer Science and Business Media LLC
Date: 28-05-2019
Publisher: IOP Publishing
Date: 21-06-2019
Publisher: Elsevier BV
Date: 2023
Publisher: Springer Science and Business Media LLC
Date: 23-09-2020
Publisher: Elsevier BV
Date: 07-2022
Publisher: SAGE Publications
Date: 05-05-2011
Abstract: In this study, a mechanical model was introduced to analyze the hair wrapping via a contact surface in the yarn formation zone. Worsted and ramie/cotton rovings were then used to produce yarns on an experimental ring frame with and without a delivery rubber roller to validate the theoretical analysis. Yarn properties, including hairiness, unevenness, and tensile properties were tested and the results indicated that the delivery roller could stop fibers from escaping from the twisting process in the spinning triangle and wrap most of them onto the stem of the yarn. In particular for worsted spinning, yarn unevenness CV, as well as tensile properties, was improved significantly due to an improved arrangement of the worsted strand when using the front delivery rubber roller. However, yarn evenness and tensile properties deteriorated for ramie/cotton yarn spun with a delivery rubber roller. This was mainly because of the high modulus of the ramie/cotton blend strand, as upstream twists were blocked and a weak spinning zone was formed to incur an unexpected drawing.
Publisher: Elsevier BV
Date: 03-2021
Publisher: Walter de Gruyter GmbH
Date: 2021
Abstract: Yarn-based strain sensor is an emerging candidate for the fabrication of wearable electronic devices. The intrinsic properties of yarn, such as excellent lightweight, flexibility, stitchability, and especially its highly stretchable performance, stand out the yarn-based strain sensor from conventional rigid sensors in detection of human body motions. Recent advances in conductive materials and fabrication methods of yarn-based strain sensors are well reviewed and discussed in this work. Coating techniques including dip-coating, layer by layer assemble, and chemical deposition for deposition of conductive layer on elastic filament were first introduced, and fabrication technology to incorporate conductive components into elastic matrix via melt extrusion or wet spinning was reviewed afterwards. Especially, the recent advances of core–sheath/wrapping yarn strain sensor as-fabricated by traditional spinning technique were well summarized. Finally, promising perspectives and challenges together with key points in the development of yarn strain sensors were presented for future endeavor.
Publisher: Springer Science and Business Media LLC
Date: 05-2014
Start Date: 2019
End Date: 2019
Funder: Australian Research Council
View Funded ActivityStart Date: 07-2019
End Date: 12-2020
Amount: $514,250.00
Funder: Australian Research Council
View Funded Activity