Determination of average molecular weight between crosslinks and polymer-solvent interaction parameters of poly(acrylamide-g-ethylene diamine tetraacetic acid) polyelectrolyte hydrogels


Caykara T., Inam R.

JOURNAL OF APPLIED POLYMER SCIENCE, cilt.91, sa.4, ss.2168-2175, 2004 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 91 Konu: 4
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1002/app.13339
  • Dergi Adı: JOURNAL OF APPLIED POLYMER SCIENCE
  • Sayfa Sayıları: ss.2168-2175

Özet

Hydrogels containing tetraprotic acid moieties sensitive to pH changes of the swelling medium were prepared from the ternary systems acrylamide/ethylene diamine tetraacetic acid/water by irradiation with gamma-rays at ambient temperature. Gel compositions of poly(acrylamide-g-ethylene diamine tetraacetic acid) [P(AAm-g-EDTA)] hydrogels were determined by using a differential pulse polarography technique. Equilibrium swelling behaviour of these hydrogels was studied using an equation, based on the Flory-Huggins thermodynamic theory, the phantom network theory of James-Guth, and the approaches of Brannon-Peppas and Peppas, which was modified by the authors for determination of M-c and chi parameters. The equation modified by the authors for the determination of M-c and chi parameters were observed to describe very well the swelling behaviour of the charged polymeric network. (C) 2003 Wiley Periodicals, Inc.