Publication: Effect of LiCF3SO3 on L-Chitosan/PMMA Blend Polymer Electrolytes
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Date
2014
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Publisher
Taylor & Francis Ltd
Abstract
This paper focuses on the effect of lithium triflate (LiCF3SO3) on the structural and conduction properties of lauroyl (L)-chitosan/poly(metylmethacryalate) (PMMA)-based polymer electrolytes. Films of L-chitosan/PMMA blends and its complexes were prepared using a solution-casting technique. The ionic conductivity of the system was measured over a wide range of frequency between 50Hz-1MHz. Impedance plot for the samples demonstrates two well-defined regions. The disappearance of the high frequency semicircular region led to a conclusion that the current carriers are ions. Sample with 30 wt% of LiCF3SO3 showed the highest conductivity of 7.59 +/- 3.64 x 10(-4) Scm(-1) at room temperature. This is consistent with the results obtained from infrared spectroscopy.
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Keywords
PMMA, L-chitosan, polymer electrolytes, conductivity, FTIR