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Effect of UV radiation on photolysis of epoxy maleate of bisphenol A

Paper ID Volume ID Publish Year Pages File Format Full-Text
28680 44085 2006 7 PDF Available
Title
Effect of UV radiation on photolysis of epoxy maleate of bisphenol A
Abstract

The behavior of unsaturated polyesteric resin epoxy maleate of bisphenol A (EMBA) to UV was investigated using both infrared (IR) and optical microscopy (OM) techniques. The UV radiation produces important modifications of the EMBA sample. A photodegradation process takes place by a free radical mechanism and involves both photolysis and photodegradation reactions. In the early stage of photolysis, the excitation of the double bonds of EMBA sample takes place with formation of radicals. The radicals, by combination, form some cross-linked structures. These structures undergo secondary reactions with hydroperoxide formation. The splitting of the EMBA chains initiated by hydroperoxide compounds leads to new aromatic and etheric structures, with elimination of both CO and CO2.

Keywords
UV radiation; Epoxy maleate; Photodegradation; Mechanism
First Page Preview
Effect of UV radiation on photolysis of epoxy maleate of bisphenol A
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 177, Issues 2–3, 25 January 2006, Pages 218–224
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering