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Dielectric study of the crystal-amorphous interphase in poly(vinylidene fluoride)/poly(methyl methacrylate) blends

Saito, H. and Stühn, B. (1994):
Dielectric study of the crystal-amorphous interphase in poly(vinylidene fluoride)/poly(methyl methacrylate) blends.
In: Polymer, pp. 475-479, 35, (3), [Article]

Abstract

We investigated the dielectric properties of crystalline poly(vinylidene fluoride) (PVDF)/poly(methyl methacrylate) (PMMA) blends in a wide range of frequency f at various temperatures T A large peak of the dielectric loss epsilon''(f) due to the interfacial polarization was found in the blend below the frequency region of the alpha(c), process. Such a peak was not observed in neat PVDF. The difference may be ascribed to the existence of a large amount of PMMA at the crystal-amorphous interphase in the blend. We also demonstrated that a low T peak in epsilon''(T), which was thought of as an interfacial peak, is not related to the alpha(a)Li. process of PVDF in the interphase, but to the beta process of PVDF.

Item Type: Article
Erschienen: 1994
Creators: Saito, H. and Stühn, B.
Title: Dielectric study of the crystal-amorphous interphase in poly(vinylidene fluoride)/poly(methyl methacrylate) blends
Language: English
Abstract:

We investigated the dielectric properties of crystalline poly(vinylidene fluoride) (PVDF)/poly(methyl methacrylate) (PMMA) blends in a wide range of frequency f at various temperatures T A large peak of the dielectric loss epsilon''(f) due to the interfacial polarization was found in the blend below the frequency region of the alpha(c), process. Such a peak was not observed in neat PVDF. The difference may be ascribed to the existence of a large amount of PMMA at the crystal-amorphous interphase in the blend. We also demonstrated that a low T peak in epsilon''(T), which was thought of as an interfacial peak, is not related to the alpha(a)Li. process of PVDF in the interphase, but to the beta process of PVDF.

Journal or Publication Title: Polymer
Volume: 35
Number: 3
Divisions: 05 Department of Physics > Institute for condensed matter physics
05 Department of Physics
Date Deposited: 26 Feb 2010 13:56
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