Dissolution of latex films after gamma-ray treatment


Aydin K., ADIYAMAN N., Ugur S. , PEKCAN O.

JOURNAL OF APPLIED POLYMER SCIENCE, vol.83, no.1, pp.129-137, 2002 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 83 Issue: 1
  • Publication Date: 2002
  • Doi Number: 10.1002/app.2235
  • Title of Journal : JOURNAL OF APPLIED POLYMER SCIENCE
  • Page Numbers: pp.129-137

Abstract

Latex films were prepared by annealing pyrene (Py)-labeled poly(methyl methacrylate) particles at glass-transition temperature (100 degreesC). These films were then irradiated by gamma -rays from Co-60 in a gamma cell at room temperature at the same dose rate (rad/h) for 30 min. Before dissolution films were annealed at elevated temperatures for a 30-min time interval to complete the film formation process. Steady-state fluorescence (SSF) technique were used to monitor the dissolution of these irradiated latex films. The dissolution of films in chloroform-heptane (80-20%) mixture was monitored in real time by the Py fluorescence intensity change. Relaxation constants k(0) and desorption coefficients Dd of polymer chains were measured. It was observed that both D-d and k(0) values first increased and then decreased by increasing the annealing temperature. (C) 2002 John Wiley & Sons, Inc.