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

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

Kurzbeschreibung (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.

Typ des Eintrags: Artikel
Erschienen: 1994
Autor(en): Saito, H. ; Stühn, B.
Titel: Dielectric study of the crystal-amorphous interphase in poly(vinylidene fluoride)/poly(methyl methacrylate) blends
Sprache: Englisch
Kurzbeschreibung (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.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Polymer
Band: 35
(Heft-)Nummer: 3
Fachbereich(e)/-gebiet(e): Fachbereich Physik > Festkörperphysik, Condensed matter physics
Fachbereich Physik
Hinterlegungsdatum: 26 Feb 2010 13:56
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