THE ELASTIC BEHAVIOR OF WEAKLY IONIC GELS

被引：21
作者：
DUBROVSKII, SA
ILAVSKY, M
ARKHIPOVICH, GN
机构：
[1] CZECHOSLOVAK ACAD SCI,INST MACROMOLEC CHEM,CS-16206 PRAGUE 6,CZECHOSLOVAKIA
[2] RUSSIAN ACAD SCI,INST CHEM PHYS,MOSCOW V-334,USSR
来源：
POLYMER BULLETIN | 1992年 / 29卷 / 05期
关键词：
D O I：
10.1007/BF00296722
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 elastic modulus of polyacrylamide-acrylic acid hydrogels is studied in a wide range of swelling degrees. The modulus does not follow the concentration dependence predicted by the rubber elasticity theory. At low swelling degrees this can be attributed to the constrained state (non-phantom behaviour) of the network chains. The reason for the increase of modulus at high swelling degrees is seen in the finite extensibility and topological entanglements of the chains, A theory including these effects is proposed and verified by experiment.
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页码：587 / 594
页数：8
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