文献类型：期刊文献

英文题名：A lattice model for thermally-sensitive core-shell hydrogels

作者：Lian, Cheng;Zhi, Dongyan;Xu, Shouhong[1];Liu, Honglai;Hu, Ying

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China; E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China

年份：2013

卷号：406

起止页码：148

外文期刊名：JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录：;EI(收录号：20132916521534);WOS:【SCI-EXPANDED(收录号:WOS:000322094300018)】；

基金：Financial support for this work is provided by the National Natural Science Foundation of China (Nos. 21076071, 20990224, and 21276074) and the 111 Project (No. B08021) of China and the Fundamental Research Funds for the central Universities of China.

语种：英文

外文关键词：Molecular thermodynamic model; Core-shell hydrogel; Swelling behavior; Thermally-sensitive

摘要：A lattice molecular thermodynamic model for describing the swelling behavior of thermally-sensitive core-shell hydrogels was developed by integrating a close-packed lattice model for mixing free energy and a Flory Gaussian chain model for the elastic free energy. The thermodynamic model is characterized with two parameters: the temperature-dependent exchange energy parameter a and the Topology-dependent size parameter V*. The input values of both parameters can be obtained by experimental results of pure polymer hydrogels. With the help of proposed model, swelling behaviors of two kinds of hydrogel systems were analyzed: one is a doubly thermally-sensitive core-shell hydrogels (with two LCSTs) and the other comprises a thermally-sensitive hydrogel shell with a hard internal core. We show that the calculated results are in good agreement with the experimental data. (C) 2013 Elsevier Inc. All rights reserved.