Poly(vinylidene fluoride)/poly(vinyl alcohol-co-vinyl acetate) blends: 2. Study by infrared spectroscopy

Blends of poly(vinylidene fluoride) (PVDF) and some poly(vinyl alcohol-co-vinyl acetate) copolymers (PVAAc) with various molecular weights and acetate contents are studied by Fourier transform infrared spectroscopy (FTIR). First, two sets of blends of PVDF with two different copolymers at various co...

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Bibliographic Details
Published in:European polymer journal 1999-02, Vol.35 (2), p.293-303
Main Authors: Bauduin, G., Boutevin, B., Malinova, A.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
Structure, morphology and analysis
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Summary:Blends of poly(vinylidene fluoride) (PVDF) and some poly(vinyl alcohol-co-vinyl acetate) copolymers (PVAAc) with various molecular weights and acetate contents are studied by Fourier transform infrared spectroscopy (FTIR). First, two sets of blends of PVDF with two different copolymers at various concentrations are analysed. Then, 50/50 (wt/wt) blends of seven PVAAc with PVDF are studied. Two carbonyl bands are observed corresponding to free and bonded carbonyls. The rate of bonded carbonyls and the interaction enthalpies are determined. The results are in good agreement with the occurrence of a rather strong interaction between the carbonyls of the residual acetate groups and the hydroxyl groups of the copolymers. No interaction between the carbonyls and PVDF were observed. The experimental results are in a good agreement with the foresights of the Coleman–Graf–Painter interaction model.
ISSN:0014-3057
1873-1945
DOI:10.1016/S0014-3057(98)00121-9