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

Zsófia Varga, Kristóf Molnár, Viktoria Torma, Miklós Zrínyi

Research output: Article

10 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)12670-12675
Number of pages6
JournalPhysical Chemistry Chemical Physics
Volume12
Issue number39
DOIs
Publication statusPublished - okt. 21 2010

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ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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