Issue 39, 2010

Kinetics of volume change of poly(succinimide) gels during hydrolysis and swelling

Abstract

Kinetics of hydrolysis induced swelling as well as pure swelling of a novel class of pH responsive biocompatible polymer gels was studied. Poly(aspartic acid) gels were prepared by hydrolysis of chemically cross-linked poly(succinimide) networks. The volume change of spherical gels of different size, measured at constant pH, proceeds in three distinct processes: solvent exchange, hydrolysis and swelling. It turned out that pure swelling as well as the swelling coupled with hydrolysis can be described by the Tanaka–Fillmore–Peters–Candau theory. The relaxation times as well as the cooperative diffusion coefficient of the network chains were determined. It was found that the initial condition of the swelling makes its influence felt neither on the relaxation time, nor on the cooperative diffusion coefficient.

Graphical abstract: Kinetics of volume change of poly(succinimide) gels during hydrolysis and swelling

Article information

Article type
Paper
Submitted
11 May 2010
Accepted
19 Jul 2010
First published
23 Aug 2010

Phys. Chem. Chem. Phys., 2010,12, 12670-12675

Kinetics of volume change of poly(succinimide) gels during hydrolysis and swelling

Z. Varga, K. Molnár, V. Torma and M. Zrínyi, Phys. Chem. Chem. Phys., 2010, 12, 12670 DOI: 10.1039/C0CP00527D

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