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The effect of UV-irradiation on poly(vinyl alcohol) composites with montmorillonite

Paper ID Volume ID Publish Year Pages File Format Full-Text
29251 44137 2007 7 PDF Available
Title
The effect of UV-irradiation on poly(vinyl alcohol) composites with montmorillonite
Abstract

Poly(vinyl alcohol), PVA, microcomposites with montmorillonite, MMT, were prepared by their mixing in aqueous colloidal solution. Thin films of composites obtained by solvent evaporation were exposed to 254-nm radiation. The course of photochemical reactions leading to various products was monitored by FTIR and UV–vis spectroscopy. The chain scission reaction was confirmed by measurement of average molecular weights and polydispersity using gel permeation chromatography (GPC) method. The crosslinking was minor process whereas oxidation and degradation appeared more efficient in exposed PVA/MMT. It was found that the presence of clay filler (MMT) has slight influence on PVA photooxidative degradation.

Keywords
Poly(vinyl alcohol); Polymer composites; Montmorillonite; Ultraviolet-irradiation
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The effect of UV-irradiation on poly(vinyl alcohol) composites with montmorillonite
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 191, Issues 2–3, 25 September 2007, Pages 209–215
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
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