| Issue |
J. Phys. II France
Volume 5, Number 3, March 1995
|
|
|---|---|---|
| Page(s) | 437 - 443 | |
| DOI | https://doi.org/10.1051/jp2:1995132 | |
J. Phys. II France 5 (1995) 437-443
Comparison Between the Elasticity of Polyacrylamide and Polyacrylic Gels
L. BenguiguiSolid State Institute and Physics Department, Technion-Israel Institute of Technology, Haifa 32000, Israel
(Received 25 March 1994, received in final form 7 November 1994, accepted 16 November 1994)
Abstract
We measured the Young modulus
E of polyacrylamide and polyacrylic gels as a function of the crosslink and polymer concentrations. We found that the variation
of
E with these two parameters is completely different for the two kinds of gels. For the polyacrylic gels,
E is an increasing function of the crosslink and polymer concentrations. However, in the case of the polyacrylamide gels,
E increases with polymer concentration but not always with the crosslink concentration. For low polymer concentrations,
E may saturate or exhibit a maximum when increasing the crosslink concentration. We proposed qualitative interpretations to
explain this different behavior.
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