THERMODYNAMIC PROPERTIES OF COPOLYMERIC HYDROGELS BASED ON 2-HYDROXYETHYL METHACRYLATE AND A ZWITTERIONIC METHACRYLATE

被引：20
|
作者：
HUGLIN, MB
REGO, JM
机构：
[1] Department of Chemistry and Applied Chemistry, University of Salford, Salford
[2] Fca. Galdacano, Departamento de I and D, UEE Explosivos, Galdacano, Vizcaya
来源：
COLLOID AND POLYMER SCIENCE | 1992年 / 270卷 / 03期
关键词：
2-HYDROXYETHYL METHACRYLATE; N; N-DIMETHYL-N-METHACRYLOXYETHYL-N-(3-SULPHOPROPYL)-AMMONIUM BETAINE; COPOLYMER; HYDROGEL; THERMODYNAMICS OF SWELLING EQUILIBRIUM;
D O I：
10.1007/BF00655475
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The copolymerisation of 2-hydroxyethyl methacrylate and a zwitterionic methacrylate, namely N,N-dimethyl-N-methacryloxyethyl-N-(3-sulphopropyl)-ammonium betaine (SPE), in the presence of a tetrafunctional crosslinker has been effected to 100% conversion by gamma-irradiation. The resultant xerogels of different compositions were swollen to equilibrium in water to yield hydrogels. Volumetric swelling and compression-strain measurements were made over the temperature range 278-343 K. All these copolymers showed an increasing volumetric swelling with temperature, but the derived values of the partial molar enthalpy, entropy and Gibbs free energy of dilution showed certain differences which were interpreted on the basis of copolymer dyad distribution.
引用
收藏
页码：234 / 242
页数：9
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