Plasticised polymer electrolytes based on PMMA grafted natural rubber-LiCF3SO3-PEG200

Yap, K.S. and Teo, L.P. and Sim, L.N. and Majid, Siti Rohana and Arof, Abdul Kariem (2011) Plasticised polymer electrolytes based on PMMA grafted natural rubber-LiCF3SO3-PEG200. Materials Research Innovations, 15. pp. 34-38. ISSN 1432-8917, DOI

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Polymer electrolyte membranes that consist of 70 wt-% natural rubber grafted with 30 wt-% poly(methyl methacrylate) (MG30) and 30 wt-% lithium trifluoromethane sulphonate (LiTf) salt have been investigated with various concentrations of poly(ethylene glycol) 200 (PEG200). The formation of polymer-salt complexes has been confirmed by Fourier transform infrared spectral studies. X-ray diffraction studies further confirmed that all the samples prepared are amorphous. The highest conducting sample has the composition of 63 wt-% MG30-27 wt-% LiTf-10 wt-% PEG with conductivity of 3.65 x 10(-4) S cm(-1) at 298 K. From differential scanning calorimetry studies, the glass transition temperature T-g is found to increase from -63 to -54 degrees C with the increase in PEG concentration at 30 wt-% PEG200. The ionic transference number of mobile ions has been estimated using Wagner's polarisation method, and the results reveal that the conducting species are mainly ions.

Item Type: Article
Additional Information: Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Uncontrolled Keywords: natural rubber; pmma; sem; complexation; conductivity; cyclic voltammetry conductivity; cyclic voltammetry lithium; rubber; complexes; transport; peo; batteries; triflate; behavior; water
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Department of Physics
Depositing User: Miss Malisa Diana
Date Deposited: 17 Jul 2013 03:28
Last Modified: 27 Aug 2019 01:18

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