聚合物-溶剂相互作用参数研究  

Studying on the Polymer - Solvent Interaction Parameter

作　　者：张丹枫[1] 吕瑞东[1] 黑恩成[1] 刘国杰[1] 

机构地区：[1]华东理工大学化学系,上海200237

出　　处：《化学学报》1999年第6期546-552,共7页Acta Chimica Sinica

基　　金：国家自然科学基金(29376236)资助项目

摘　　要：根据液体混合的通用Gibbs自由能模型,导得了一个能满意地描述高分子溶液中聚合物-溶剂相互作用参数随浓度和温度变化的方程.它由焓贡献和熵贡献两部分组成,在形式上与Koningsveld-Kleintijen关系式相同,但它的熵贡献是浓度的复杂函数,而不象Koningsveld建议的是一个随意的常数.该方程能够很好地解释高分子溶液的某些特性.Based on the generalized Gibbs free energy model of the mixing of liquids established by this work, an equation which can satisfactorily describe the variations of polymer - solvent interaction parameter with the concentration and temperature in the polymer solutions is derived. It is composed of two parts, namely the contributions of enthalpy and entropy, and is the same as Koningsveld -Kleintijens' relation formally. But its entropy contribution Xs is a complex function of concentration, rather than an arbitrary constant as proposed by Koningsveld. Some characters of the polymer solution can be well explained by this equation.

关 键 词：内压 高分子溶液 聚合物 溶剂 相互作用参数 

分 类 号：O631.4[理学—高分子化学]