Diffusion of a carbonate mixture in a poly(vinyl alcohol‐co‐vinyl acetate) in the solid state
The diffusion study of a carbonate mixture composed of ethylene and propylene carbonates in poly(vinyl alcohol‐co‐vinyl acetate) (PVA–Ac) was studied. The diffusion occurred in the solid state and the effect of the carbonate mixture on the PVA–Ac properties are presented as well as the homogeneity of the diffusion. Due to the complexity of the diffusion kinetics with temperature, a model was made using the free volume theory at 75 °C. This temperature was chosen for modelling because the physical properties of the polymer are relatively stable at this point. Swelling heterogeneity, due to the particle size distribution of the powder, were estimated. Copyright © 2004 Society of Chemical Industry
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Document Type: Research Article
Affiliations: 1: Laboratoire de Rhéologie des Matières Plastiques, Faculté des Sciences, Université Jean Monnet, Saint-Etienne, France 2: BASF-AG, Ludwigshafen, Germany
Publication date: April 1, 2004
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