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Completely miscible ternary blends - III. Poly(vinylidene fluoride)-poly(methyl methacrylate)-poly(vinyl acetate)

journal contribution
posted on 1996-12-01, 00:00 authored by Qipeng Guo
Ternary blends comprising poly(vinylidene fluoride) (PVDF), poly(methyl methacrylate) (PMMA), and poly(vinyl acetate) (PVAc) were examined by using differential scanning calorimetry (DSC) for thermal transition (T g ) behaviour and optical observations for phase separation on heating or lower critical solution temperature (LCST) behaviour. It was found that the ternary blend system exhibits LCST behaviour, but there is no minimum on the cloud point surface of the ternary blends. All the ternary blends have a single T g which varied with overall blend composition, indicating that the ternary blend presents a homogeneous single amorphous phase, i.e. the three components are completely miscible in the amorphous state at all compositions. The overall crystallization rate of PVDF in the ternary blend decreases with the content of amorphous diluent comprising PMMA and PVAc. The crystallinity index of PVDF in both the binary and ternary blends decreases with increasing diluent content owing to the enhanced T g value of the system.

History

Journal

European polymer journal

Volume

32

Issue

12

Pagination

1409 - 1413

Publisher

Elsevier

Location

Amsterdam, The Netherlands

ISSN

0014-3057

Language

eng

Publication classification

CN.1 Other journal article

Copyright notice

1996, Elsevier

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