INFLUENCE OF TEMPERATURE ON SWELLING AND MECHANICAL-PROPERTIES OF A SULFOBETAINE HYDROGEL

被引：43
|
作者：
HUGLIN, MB
REGO, JM
机构：
[1] Department of Chemistry and Applied Chemistry, University of Salford, Salford
来源：
POLYMER | 1991年 / 32卷 / 18期
关键词：
HYDROGEL; ZWITTERION; DEGREE OF SWELLING; YOUNG MODULUS; INTERACTION PARAMETER; FREE ENERGY OF DILUTION;
D O I：
10.1016/0032-3861(91)90538-T
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The swelling and mechanical properties of a hydrogel based on the zwitterionic monomer N,N-dimethyl-N-methacryloyloxyethyl-N-(3-sulphopropyl)ammonium betaine crosslinked with ethylene glycol dimethacrylate have been determined as a function of temperature. The volumetric swelling has been found to decrease slightly with temperature. On the other hand, the Young's modulus as well as the experimental crosslink density increase with temperature. The results obtained have been explained by examining the changes with temperature of the partial molar Gibbs free energy of dilution in conjunction with the variation of its enthalpic and entropic contributions.
引用
收藏
页码：3354 / 3358
页数：5
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