Summary
The effect of the concentration of diluent (water) at the formation of polyacrylamide networks with a small content of sodium methacrylate (mole fraction of MNa groups in the PAAm chain xMNa=0.012) on the swelling and mechanical equilibria of gels in acetone-water mixtures was investigated. With increasing polymer content at network formation both the extent of phase transition Δ (determined by a change in the macroscopic dimensions of gels) and the critical value of the interaction parameter χc (given by the composition of the acetonewater mixture at the collapse) decrease; the observed dependences are in a semiquantitative agreement with the theory. The observed jumpwise change in the modulus of gels correlates well with a change in the gel volume at the collapse.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
HROUZ, J., ILAVSKÝ, M., HAVLÍČEK, I. and DUŠEK, K.: Collect. Czech.Chem.Commun. 44, 1942 (1979)
ILAVSKÝ, M.: Polymer 22, 1687 (1981)
ILAVSKÝ, M., HROUZ, J. and ULBRICH, K.: Polym.Bull. 7, 107 (1982)
ILAVSKÝ, M.: Macromolecules 15, 782 (1982)
JANAS, V.F., RODRIGUEZ, F. and COHEN, C.: Macromolecules 13, 977 (1980)
STEJSKAL, J., GORDON, M. and TORKINGTON, J.A.: Polym.Bull. 3, 621 (1980)
TANAKA, T.: Polymer 20, 1404 (1979)
ILAVSKÝ, M. and HROUZ, J.: Polym.Bull. 8, 387 (1982)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Ilavský, M., Hrouz, J. Phase transition in swollen gels. Polymer Bulletin 9, 159–166 (1983). https://doi.org/10.1007/BF00275584
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00275584