高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (1): 130.

• 研究简报 • 上一篇    下一篇

无盐聚电解质溶液的分子热力学模型

蔡钧, 刘洪来, 胡英   

  1. 华东理工大学化学系, 上海 200237
  • 收稿日期:1999-01-25 出版日期:2000-01-24 发布日期:2000-01-24
  • 通讯作者: 蔡 钧(1969年出生),男,博士,讲师,从事热力学研究.
  • 基金资助:

    国家自然科学基金(批准号:29876006);教育部博士点专项科研基金(批准号:96025109)资助.

Molecular Thermodynamic Model of Polyelectrolyte Solutions Without Adding Salt

CAI Jun, LIU Hong-Lai, HU Ying   

  1. Department of Chemistry, East China University of Science and Technology, Shanghai 200237, China
  • Received:1999-01-25 Online:2000-01-24 Published:2000-01-24

关键词: 聚电解质, 分子热力学, 缔合, 渗透系数, 活度系数

Abstract: A molecular thermodynamic model for polyelectrolyte solutions without the added salt has been developed in this work. It includes three contributions. The first term is the contribution from the mixture of charged hard spheres which is determined by using Blum′s MSA model. The second term is that from bonding of polyion segments which is calculated through two-particle cavity correlation function accounting for the correlation in the nearest-neighbour segments of polyion. The third term accounts for the stickiness between the polyion and its counterions beyond the territorial binding. Thermodynamic properties of polyelectrolyte solution can be described satisfactorily.

Key words: Polyelectrolyte, Molecular thermodynamics, Sticky, Osmotic coefficient, Activity coefficient

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