Monomer consumption rates during celation at various temperatures: A fast transient fluorescence study

Pekcan O., Kaya D.

JOURNAL OF APPLIED POLYMER SCIENCE, vol.81, no.13, pp.3161-3168, 2001 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 81 Issue: 13
  • Publication Date: 2001
  • Doi Number: 10.1002/app.1768
  • Journal Name: JOURNAL OF APPLIED POLYMER SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3161-3168
  • Keywords: fast transient fluorescence, lifetimes, gelation activation energy, RADICAL CROSS-LINKING, ENERGY-TRANSFER, METHYL-METHACRYLATE, NETWORK FORMATION, POLYMER COLLOIDS, COPOLYMERIZATION, GELATION, TRANSITION, DIFFUSION, PARTICLES
  • Istanbul Technical University Affiliated: Yes

Abstract

The gelation during free-radical crosslinking copolymerization (FCC) of methyl methacrylate (MMA) and ethylene glycol dimethacrylate (EGDM) was studied by using fast transient fluorescence (FTRF) technique. Pyrene (Py) was used as a probe for the FTRF experiments. Fluorescence lifetimes of Py from its decay traces were measured and used to monitor the gelation process at various temperatures. MMA consumption rates were measured during gelation process by using the Stern-Volmer model. Gelation activation energy DeltaE(G) was measured and found to be 15.6 kcal mol(-1). (C) 2001 John Wiley & Sons, Inc.