Sorption and slow release kinetics of PAAM gels at various temperatures

Evingur G. A., Pekcan O.

JOURNAL OF POLYMER ENGINEERING, vol.27, no.8, pp.583-595, 2007 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 27 Issue: 8
  • Publication Date: 2007
  • Doi Number: 10.1515/polyeng.2007.27.8.583
  • Journal Name: JOURNAL OF POLYMER ENGINEERING
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.583-595
  • Istanbul Technical University Affiliated: Yes

Abstract

Small molecule sorption and slow release in and out of polyacrylamide (PAAm) gels were studied by using steady state fluorescence (SSF) technique. Pyranine (P-y) dissolved in water used as a probe. Fluorescence emission intensity, I-p from P-y was used to monitor for studying sorption and slow release processes at various temperatures. Sorption and slow release processes were analyzed by using Fickian diffusion model and coefficients were obtained. Related activation energies were also calculated for the corresponding physical processes.