Title

Photopolymerization of 1,6-Hexanedioldiacrylate Initiated by Three-Component Systems Based on N-Arylphthalimides

Document Type

Article

Publication Date

8-15-2004

Department

Polymers and High Performance Materials

Abstract

Three-component photoinitiators comprised of an N-arylphthalimide, a diarylketone, and a tertiary amine were investigated for their initiation efficiency of acrylate polymerization. The use of an electron-deficient N-arylphthalimide resulted in a greater acrylate polymerization rate than an electron-rich N-arylphthalimide. Triplet energies of each N-arylphthalimide, determined from their phosphorescence spectra, and the respective rate constants for triplet quenching by the N-arylphthalimide derivatives (acquired via laser flash photolysis) indicated that an electron-proton transfer from an intermediate radical species to the N-arylphthalimide (not energy transfer from triplet sensitization) is responsible for generating the initiating radicals under the conditions and species concentrations used for polymerization. (C) 2004 Wiley Periodicals, Inc.

Publication Title

Journal of Polymer Science Part A-Polymer Chemistry

Volume

42

Issue

16

First Page

4009

Last Page

4015