文献类型：期刊文献

中文题名：空间受限温敏性高分子凝胶溶胀行为的分子热力学模型（英文）

英文题名：A Molecular Thermodynamic Model for Restricted Swelling Behaviors of Thermo-sensitive Hydrogel

作者：练成[1,2];支东彦[2,3];徐首红[2];刘洪来[1,2]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China;[3]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2014

卷号：22

期号：Z1

起止页码：1307

中文期刊名：Chinese Journal of Chemical Engineering

外文期刊名：中国化学工程学报（英文版）

收录：CSTPCD;;EI(收录号：20151400718955);Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000346572400021)】；CSCD:【CSCD2013_2014】；

基金：Supported by the National Natural Science Foundation of China (21076071, 21276074), the 111 Project of the Ministry of Education of China (B08021) and the Fundamental Research Funds for the Central Universities of China.

语种：中文

中文关键词：Thermo-sensitive;hydrogel;Restricted;swelling;Phase;equilibrium;Molecular;thermodynamic;model

外文关键词：Thermo-sensitive hydrogel Restricted swelling Phase equilibrium Molecular thermodynamic model

摘要：A molecular thermodynamic model was developed for describing the restricted swelling behavior of a thermosensitive hydrogel confined in a limited space. The Gibbs free energy includes two contributions, the contribution of mixing of polymer and solvent calculated by using the lattice model of random polymer solution, and the contribution due to the elasticity of polymer network. This model can accurately describe the swelling behavior of restricted hydrogels under uniaxial and biaxial constraints by using two model parameters. One is the interaction energy parameter between polymer network and solvent, and the other is the size parameter depending on the degree of cross-linking. The calculated results show that the swelling ratio reduces significantly and the phase transition temperature decreases slightly as the restricted degree increases, which agree well with the experimental data.
A molecular thermodynamic model was developed for describing the restricted swelling behavior of a thermosensitive hydrogel confined in a limited space. The Gibbs free energy includes two contributions, the contribution of mixing of polymer and solvent calculated by using the lattice model of random polymer solution, and the contribution due to the elasticity of polymer network. This model can accurately describe the swelling behavior of restricted hydrogels under uniaxial and biaxial constraints by using two model parameters. One is the interaction energy parameter between polymer network and solvent, and the other is the size parameter depending on the degree of cross-linking. The calculated results show that the swelling ratio reduces significantly and the phase transition temperature decreases slightly as the restricted degree increases, which agree well with the experimental data.