Sorption phenomena of organic solvents in polymers: Part I

被引：3
|
作者：
Sabzi, F [1 ]
Boushehri, A [1 ]
机构：
[1] Shiraz Univ, Coll Sci, Dept Chem, Shiraz 71454, Iran
来源：
EUROPEAN POLYMER JOURNAL | 2005年 / 41卷 / 05期
关键词：
sorption phenomena; VLE data; Flory-Huggins interaction parameter;
D O I：
10.1016/j.eurpolymj.2004.11.035
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
In this work we use the vapor-sorption equilibrium data to show the degree of solvent upturn in each solvent-polymer system. For this purpose, 23 isothermal data sets for four polymer + solvent binaries, one block copolymer + solvent binary and for the corresponding polymer pairs have been used in the temperature range of 25-70 degrees C. Solvents Studied are benzene, carbon tetrachloride, chloroform and pentane. Homopolymers studied are polyisobutylene, poly(F-caprolactone), poly(ethylene oxide), n-heptadecane, polystyrene, poly(vinyl chloride), poly(vinyl methyl ether), and n-tetracosane. According to these data sets, solvent weight fraction in the polymer is plotted against solvent-vapor activity that is calculated assuming an ideal gas phase of pure solvent vapor neglecting the vapor pressure of the polymer. We use the Flory-Huggins theory to obtain dimensionless interaction parameter, Z. Also the Zimm-Lundberg Clustering theory and non-ideality thermodynamic factor, F are used to interpret the equilibrium data. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：974 / 983
页数：10
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