The role and impact of rubber in poly(methyl methacrylate)/lithium triflate electrolyte

• Main Authors: Latif, Famiz, Aziz, Madzlan, Katun, Nasir, Ab. Malik Marwan, Alia, Yahya, Muhd Zuazhan
• Format: Article
• Published: Elsevier BV 2006
• Subjects: QD Chemistry
• Online Access: http://eprints.utm.my/id/eprint/9004/; http://dx.doi.org/10.1016/j.jpowsour.2005.12.007

In this research, new thin freestanding films of poly(methyl methacrylate) (PMMA)/50% epoxidised natural rubber (ENR 50) were doped with lithium triflate, LiCF3SO3 salt was prepared by a solvent casting method. The incorporation of ENR 50 is found to increase the conductivity of PMMA/LiCF3SO3 by two orders of magnitude at room temperature. The highest conductivity achieved was 5.09 × 10-5 S cm-1 at room temperature when 60% of LiCF3SO3 salt was introduced into the PMMA blend containing 10% ENR 50. The formation of excessive hydrogen bonds and interchain crosslinking limit the performance of the blend at higher concentrations of ENR 50. The ionic conduction mechanisms in PMMA/ENR 50/LiCF3SO3 electrolytes obey the Arrhenius rule in which the ion transport in these materials is thermally assisted.