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Type: Artigo de periódico
Title: Flory-Huggins interaction parameter of poly(ethyleneoxide)/poly(epichlorohydrin) and poly(ethyleneoxide)/poly(epichlorohydrin-co-ethyleneoxide) blends
Author: Silva, MA
De Paoli, MA
Felisberti, MI
Abstract: Blends of poly(ethylene) oxide with poly(epichlorohydrin) and poly(epichlorohydrin-co-ethylene oxide) have been prepared by the freeze-drying method from benzene solutions of the polymer mixture at different compositions. The miscibility of the mixtures was studied by DSC. A single glass transition temperature is observed for all the blends studied. Measurement of the melting temperature (T-m) depression for the blends allowed determination of the Flory-Huggins interaction parameter (chi(12)) of the two polymers in the melt using the Nishi-Wang equation. The Hoffman-Weeks extrapolation was applied to obtain equilibrium T-m data. The values of the chi(12) Obtained from T-m depression data were negative for all blends. This suggests the miscibility of the components of the blends. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
Subject: poly(ethylene oxide)
poly(epichlorohydrin-co-ethylene oxide)
Country: Inglaterra
Editor: Elsevier Sci Ltd
Citation: Polymer. Elsevier Sci Ltd, v. 39, n. 12, n. 2551, n. 2556, 1998.
Rights: fechado
Identifier DOI: 10.1016/S0032-3861(97)00574-0
Date Issue: 1998
Appears in Collections:Unicamp - Artigos e Outros Documentos

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