高等学校化学学报

高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (11): 1614.

• 研究论文 • 上一篇    下一篇

高聚物溶液中大分子链尺寸的研究(Ⅲ)——一种测算高分子溶液第二维里系数的新方法

钱锦文, 戚国荣, 封麟先   

  1. 浙江大学高分子科学与工程系, 杭州 310027
  • 收稿日期:1992-11-24 修回日期:1993-07-09 出版日期:1993-11-24 发布日期:1993-11-24
  • 通讯作者: 钱锦文, 男, 46岁, 副教授
  • 作者简介:钱锦文, 男, 46岁, 副教授
  • 基金资助:

    浙江省自然科学基金

Studies on Polymer Chain Dimension in Solution (Ⅲ) --A New Method for Prediction of Second Virial Coefficient of Polymer Solution

QIAN Jin-Wen, QI Guo-Rong, FENG Lin-Xian   

  1. Department of Polymer Science and Engineering.ZheJiang University, Hangzhou, 310027
  • Received:1992-11-24 Revised:1993-07-09 Online:1993-11-24 Published:1993-11-24

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摘要： 将高聚物溶液中大分子链尺寸对浓度的依赖关系与Zimm稀溶液第二维里系数的统计力学硬球模型相结合,借助聚合物的特性粘数、Mark-Houwink方程或分子量,计算聚合物-溶剂体系在稀溶液浓度范围内π/C或H·C/τ的模拟实验值.再以π/C或H·C/τ与浓度线型回归中的始斜率求体系的第二维里系数A2,计算了30种聚合物-溶剂体系的295个不同分子量的A2值,结果均与其实验值吻合较好,且明显优于其它理论模型测算的结果.

关键词: 高分子溶液, 第二维里系数, 链团尺寸

Abstract: Amethod for prediction of second virial coefficient (A2) from intrinsic viscosity and Mark-Houwink equation or molecular weight has been proposed.The A2 values of 295 samples from 30 kinds of polymer/solvent systems (21 polymers and 12 solvents) calculated by this method are in quite good accordance with experimental results.And also, the model presented here is the best one for obtaining A2, compared with other theories and model.

Key words: Polymer solution, Second virial coefficient, Chain dimension

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