Journal
SOLID STATE IONICS
Volume 181, Issue 13-14, Pages 586-591Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ssi.2010.03.016
Keywords
Amylopectin; Plasticization; Solid polymeric electrolyte
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Funding
- Fundacao Araucaria de Apoio ao Desenvolvimento Cientifico e Tecnologico do Parana [9506]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico-CNPq [556542/2005-3]
- UNIPAR (Universidade Paranaense) [274/2004]
- FAPESP
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This paper describes the preparation and characterization of a solid polymer electrolyte based on amylopectin-rich starch plasticized with glycerol. The samples were characterized through ionic conductivity (sigma) measurements, scanning electron microscopy, thermal analysis, and spectroscopy in the UV-Vis-NIR region. The results showed that the highest sigma (1.1 x 10(-4) Scm(-1) at 30 degrees C) was obtained for the sample with n = [O]/[Li] = 6.5 ratio. In addition, the samples plasticized with 30-35 wt.% of glycerol presented high ionic conductivity, transparency and conduction stability. The ionic conductivity measurements as a function of lithium salt contents showed a maximum for n=6.5. The ionic conductivity as a function of time for amylopectin-rich starch plasticized with 30 wt.% of glycerol and containing [O]/[Li] = 10 showed conduction stability over 6 months (sigma similar to 3.01 x 10(-5) S cm(-1)). (C) 2010 Elsevier B.V. All rights reserved.
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