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Title: Polarization absorption currents in poly(vinyledene fluoride) : poly(methyl methacrylate) blend system
Authors: Garg, A K
Keller, J M
Datt, S C
Chand, Navin
Issue Date: Feb-2000
Publisher: NISCAIR-CSIR, India
Abstract: The blend system of semi-crystalline poly(vinyledene fluoride) (PVDF) with amorphous poly(methylmethacrylate) (PMMA) has been investigated in detail for understanding transient absorption current behaviour. Bilaterally aluminized solvent cast blend samples of various PVDF:PMMA compositions (100:00,90: 10, 80:20,70:30 wt%) were thermally charged with field ranging from 50 to 125 kV/cm at different temperatures (50-110°C). The observed time, poling temperature, poling field, and wt% blending composition dependence suggest that the transient behaviour is mainly governed by dipolar motion in the bulk samples. Further, in view of the semi-crystalline character of PVDF and the heterogeneous nature of blends, a definite contribution to such currents from charges hopping amongst the localized states, space charges and interfacial effects cannot be ruled out.
Page(s): 40-46
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Appears in Collections:IJEMS Vol.07(1) [February 2000]

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