高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (4): 646.

• 论文 • 上一篇    下一篇

双流体高聚物配位溶液理论──纯物质的状态方程及其应用

蒋文华, 李浩然, 韩世钧   

  1. 浙江大学化学系, 杭州 310027
  • 收稿日期:1995-03-22 出版日期:1996-04-24 发布日期:1996-04-24
  • 通讯作者: 韩世钧
  • 作者简介:蒋文华,男,27岁,博士研究生.
  • 基金资助:

    国家自然科学基金

Two-Fluid Polymer Coordination Solution Theory──Equation of State for Pure Components and Its Applications

JIANG Wen-Hua, LI Hao-Ran, HAN Shi-Jun   

  1. Department of Chemistry, Zhejiang University, Hangzhou 310027
  • Received:1995-03-22 Online:1996-04-24 Published:1996-04-24

摘要: 以Flory局部组成型囚胞理论为雏形,引进空穴数,建立了更符合流体特性的双流体高聚物配位统计模型。以配位分数和局部配位分数替代原局部组成中面积接触分数和局部面积接触分数概念,用拟化学近似处理局部配位分数,导出纯物质的状态方程,并应用于聚丙烯(PP)、聚丁烯-1(PBT)、聚苯乙烯(PS)三个体系的关联,取得了良好的关联精度。根据PP和PBT的链节结构与空穴数的关系,预言了高聚物的链节结构和空穴数与聚合物流动性的定性关系。

关键词: 聚合物, 溶液理论, 状态方程

Abstract: A new model named polymer's two-fluid coordination thermodynamic statisticmodel based on Flory's cell theory coupled with local composition is proposed.The holesimilar to that in the Simha-Socmcynsky hole theory is introduced and two concepts of sitefraction and local site fraction in Flory's theory are replaced by coordination fraction and local coordination fraction.Quasi-chemical treatment is applied to calculate the local coordination fraction.An equation of state of pure components based on the new model is derived andthe P-V-Tproperties of three systems [polystyrene, polypropylene and poly (1-betene3)] ,were correlated by the new equation.The results were fine.According to the relation between segment structure of polymer and holes, we predict that if polymers are similar to eachother in structure, their holes and flow properties of melts decrease with the increase of sizeof subgroup of polymer's segment.

Key words: Polymer, Theory of solution, Equation of state

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