Photopolymerization of Acrylates Using N-Aliphaticmaleimides as Photoinitiators

Document Type

Article

Publication Date

8-1-1999

Department

Polymers and High Performance Materials

Abstract

The photopolymerization of a diacrylate monomer with an N-aliphaticmaleimide as the photoinitiator has been investigated by photodifferential scanning calorimetry (photo-DSC), real-time infrared (RTIR) spectroscopy, and real-time UV (RTUV) spectroscopy. Photo-DSC exotherm results for relatively thick films (similar to 150 mu m) showed an increase in the polymerization reactivity (R) up to a concentration of only about 2 mol% N-aliphaticmaleimide. RTIR analysis was used to determine that the reactivity of a diacrylate thin film (similar to 10 mu m) increased continually as the concentration of AcOEMI increased from 0.1 to 30 mol%. Both RTIR and RTUV spectroscopy indicated that essentially AcOEMI was completely consumed in the polymerization process, and colorless crosslinked acrylate films with little absorbance above 300 nm were produced. (C) 1999 Elsevier Science Ltd. All rights reserved.

Publication Title

Polymer

Volume

40

Issue

18

First Page

5063

Last Page

5072

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