Ionic conductivity and dielectric studies of LiClO4 doped poly(vinylalcohol)(PVA)/chitosan(CS) composites

This paper focuses on the dielectric constant (ε′), dielectric loss factor (ε″) and frequency dependent conductivity (σac) properties of newly prepared poly(vinylalcohol) (PVA) chitosan (CS) composite films incorporated with different concentrations of LiClO4. The composite films were prepared using...

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Bibliographic Details
Published in:Journal of advanced dielectrics 2014-10, Vol.4 (4), p.1450033-1-1450033-7
Main Authors: Rathod, Sunil G., Bhajantri, R. F., Ravindrachary, V., Pujari, P. K., Sheela, T.
Format: Article
Language:English
Subjects:
Chitosan
Composite materials
conductivity
Dielectric loss
Dielectric properties
Ion currents
Ions
Poly(vinylalcohol)
Specific heat
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Summary:This paper focuses on the dielectric constant (ε′), dielectric loss factor (ε″) and frequency dependent conductivity (σac) properties of newly prepared poly(vinylalcohol) (PVA) chitosan (CS) composite films incorporated with different concentrations of LiClO4. The composite films were prepared using solution casting technique. The complexation between salt and polymer host is confirmed by FT Raman and UV-Vis studies. The sample containing 20 wt.% LiClO4 exhibits a highest ionic conductivity of 3 × 10-6 S/cm at room temperature. The dielectric properties of the composites follow non-Debye behavior.
ISSN:2010-135X
2010-1368
DOI:10.1142/S2010135X14500337