Synthesis and properties of powdery hydrogels based on acrylamide, methacrylamide, and their N-substituted derivatives

被引：5
|
作者：
Lopour, P
Sevcik, S
Labsky, J
Lednicky, F
机构：
[1] Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic
来源：
ANGEWANDTE MAKROMOLEKULARE CHEMIE | 1996年 / 243卷
关键词：
D O I：
10.1002/apmc.1996.052430113
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Lightly crosslinked hydrogels based on acrylamide, N-(1,1-dimethyl-3-oxobutyl)-acrylamide, N,N-dimethylacrylamide, methacrylamide, N-(2-hydroxypropyl)methacrylamide and N-[tris(hydroxymethyl)methyl]methacrylamide were synthesized in form of fine powders, consisting of aggregates of very small (similar to 10(-1) mu m) particles. The powdery hydrogels were obtained by precipitation polymerization in acetone and diethyl ether, using N,N'-methylenebisacrylamide and ethylene dimethacrylate as crosslinking agents. Dependences of water-swellability, particle size, aggregation, specific surface and content of the uncrosslinked water-soluble polymers and low-molecular-weight substances in the hydrogels on the conditions of their synthesis were studied. Suitability of particular powdery hydrogels synthesized for the preparation of silicone rubber - hydrogel composites is discussed.
引用
收藏
页码：151 / 159
页数：9
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