ORCID Profile
0000-0001-8283-1278
Current Organisations
Xiamen University Malaysia
,
Taylor's University
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Publisher: Wiley
Date: 26-01-2017
DOI: 10.1002/PC.24282
Publisher: Elsevier BV
Date: 07-2015
Publisher: Elsevier BV
Date: 10-2021
Publisher: Springer International Publishing
Date: 18-12-2020
Publisher: SAGE Publications
Date: 03-01-2018
Abstract: The effect of electron beam radiation on ethylene–propylene diene terpolymer olypropylene blends is studied as an attempt to develop radiation sterilizable polypropylene/ethylene–propylene diene terpolymer blends suitable for medical devices. The polypropylene/ethylene–propylene diene terpolymer blends with mixing ratios of 80/20, 50/50, 20/80 were prepared in an internal mixer at 165°C and a rotor speed of 50 rpm/min followed by compression molding. The blends and the in idual components were radiated using 3.0 MeV electron beam accelerator at doses ranging from 0 to 100 kGy in air and room temperature. All the s les were tested for tensile strength, elongation at break, hardness, impact strength, and morphological properties. After exposing to 25 and 100 kGy radiation doses, 50% PP blend was selected for in vivo studies. Results revealed that radiation-induced crosslinking is dominating in EPDM dominant blends, while radiation-induced degradation is prevailing in PP dominant blends. The 20% PP blend was found to be most compatible for 20–60 kGy radiation sterilization. The retention in impact strength with enhanced tensile strength of 20% PP blend at 20–60 kGy believed to be associated with increased compatibility between PP and EPDM along with the radiation-induced crosslinking. The scanning electron micrographs of the fracture surfaces of the PP/EPDM blends showed evidences consistent with the above contentation. The in vivo studies provide an instinct that the radiated blends are safe to be used for healthcare devices.
Publisher: Wiley
Date: 29-01-2016
DOI: 10.1002/PC.23928
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2019
Publisher: Informa UK Limited
Date: 27-07-2023
Publisher: Elsevier BV
Date: 03-2019
Publisher: Wiley
Date: 20-06-2015
DOI: 10.1002/VNL.21495
Publisher: Elsevier BV
Date: 2023
Publisher: Elsevier BV
Date: 10-2020
Publisher: Elsevier BV
Date: 10-2016
DOI: 10.1016/J.MSEC.2016.05.037
Abstract: Bones are nanocomposites consisting of a collagenous fibre network, embedded with calcium phosphates mainly hydroxyapatite (HA) nanocrystallites. As bones are subjected to continuous loading and unloading process every day, they often tend to become prone to fatigue and breakdown. Therefore, this review addresses the use of nanocomposites particularly polymers reinforced with nanoceramics that can be used as load bearing bone implants. Further, nanocomposite preparation and dispersion modification techniques have been highlighted along with thorough discussion on the influence that various nanofillers have on the physico-mechanical properties of nanocomposites in relation to that of natural bone properties. This review updates the nanocomposites that meet the physico-mechanical properties (strength and elasticity) as well as biocompatibility requirement of a load bearing bone implant and also attempts to highlight the gaps in the reported studies to address the fatigue and creep properties of the nanocomposites.
Publisher: AIP Publishing
Date: 2019
DOI: 10.1063/1.5120985
Publisher: Springer Science and Business Media LLC
Date: 21-04-2020
Publisher: Elsevier BV
Date: 12-2020
Publisher: Informa UK Limited
Date: 30-01-2019
Publisher: Springer Science and Business Media LLC
Date: 09-2016
Publisher: Springer Science and Business Media LLC
Date: 22-05-2017
Publisher: Informa UK Limited
Date: 29-12-2016
Publisher: Elsevier BV
Date: 11-2020
Publisher: Elsevier BV
Date: 08-2020
Publisher: Elsevier BV
Date: 04-2016
Publisher: IOP Publishing
Date: 12-12-2016
Publisher: Informa UK Limited
Date: 16-09-2016
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2020
Publisher: Hindawi Limited
Date: 16-08-2021
DOI: 10.1002/ER.7181
Publisher: Elsevier BV
Date: 07-2021
Publisher: Wiley
Date: 09-06-2022
DOI: 10.1002/JCTB.7138
Abstract: Deep eutectic solvents (DESs) are new types of tunable solvents that have attracted a large scientific community due to their versatile applications and attractive physical properties. Ammonium‐based solvents are widely used in desulfurization processes, but they are toxic and expensive. Thus, to replace the conventional ammonium‐based solvents, this work aims to synthesize novel ammonium–ethylene glycol (EG)‐based ternary DESs (TDESs). The thermophysical properties, such as viscosity, density, acidity, stability, degradation point, melting point, conductivity, refractivity and miscibility, were measured in this study. The TDESs were prepared using varying molar ratios ranging from 1:3 to 1:5 by combining a hydrogen bond donor (EG) with ZnCl 2 and three ammonium‐based hydrogen bond acceptors, namely ethylammonium chloride, diethylammonium chloride and diethylethanolammonium chloride. It was found that most properties are significantly superior to those of the constituent components of the TDESs. Arrhenius and linear equation fittings with respect to temperatures ranging from 20 to 100 °C predict R 2 values close to unity. The viscosity, pH and density decrease while electrical conductivity increases with increasing temperature. Such interesting observations are mainly caused by the particles’ excitation phenomena that increase their kinetic energy and volume. Furthermore, the lower melting point of TDESs compared to the constituent components is attributed to the charge delocalization through hydrogen bonding between donor and acceptor molecules. © 2022 Society of Chemical Industry (SCI).
Publisher: Springer Science and Business Media LLC
Date: 02-04-2014
Publisher: Elsevier BV
Date: 10-2019
Publisher: Springer International Publishing
Date: 2017
Publisher: Elsevier BV
Date: 10-2013
Publisher: Elsevier BV
Date: 12-2020
Publisher: AIP Publishing
Date: 2019
DOI: 10.1063/1.5120990
Publisher: Elsevier BV
Date: 11-2019
Publisher: IOP Publishing
Date: 24-12-2018
Publisher: Informa UK Limited
Date: 18-07-2019
Publisher: Elsevier BV
Date: 12-2010
Publisher: Elsevier BV
Date: 12-2017
Publisher: Springer Science and Business Media LLC
Date: 02-2016
No related grants have been discovered for Rashmi Walvekar.