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Phase behaviors of binary polymer solutions: The extended lattice fluid model

✍ Scribed by Jeong Gyu Jang; Young Chan Bae

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
172 KB
Volume
70
Category
Article
ISSN
0021-8995

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✦ Synopsis

The generalized lattice-fluid (GLF) model is extended to predict phase behaviors of polymer/solvent systems. The GLF model gives some difficulties in describing liquid-liquid equilibria (LLE) of binary polymer solution systems due to general assumptions on its derivation. An extended lattice-fluid (ELF) model is proposed by introducing a new universal constant (C 0 ) and a model parameter ( ). The proposed model is then compared with experimental data for polymer/solvent systems and polymer1/polymer2 systems, which exhibit lower critical solution temperature (LCST) behaviors. Theoretical predictions and experimental results are in good agreement.

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