INFLUENCE OF A SALT ON SOME PROPERTIES OF HYDROPHILIC METHACRYLATE HYDROGELS

被引：69

作者：

HUGLIN, MB

REGO, JM

机构：

[1] Department of Chemistry, Department of Applied Chemistry, University of Salford

[2] UE Explosivos, Fca. Galdacano, Departamento de I & D, 48960 Galdacano, Vizcaya

来源：

MACROMOLECULES | 1991年 / 24卷 / 09期

关键词：

D O I：

10.1021/ma00009a064

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Poly(2-hydroxyethyl methacrylate) (PHEMA) and poly[N,N-dimethyl-N](methacryloyloxy)-ethyl]-N-(3-sulfopropyl)ammonium betaine] (PSPE) hydrogels have been prepared by means of gamma-irradiation. The variation of the swelling and mechanical properties of these gels with the concentration of potassium thiocyanate in the swelling medium has been examined. Comparison of these properties in terms of the nature of the hydrophilic group has been made. The results have been analyzed and quantified via the application of the Donnan-type equilibrium theory in conjunction with the equilibrium thermodynamics of ternary systems solvent/polymer/solvent. In this manner, relevant water/polymer, salt/water, and salt/polymer interaction parameters have been obtained. The thermodynamic analysis shows the importance of the zwitterionic group in PSPE with regard to the swelling behavior of PSPE hydrogels in comparison with PHEMA hydrogels in aqueous salt solutions.

引用

页码：2556 / 2563

页数：8

共 21 条

[1] *UBER QUELLUNG VON VERNETZTER POLYMETHACRYLSAURE [J].