Accelerating effect of montmorillonite on oxidative degradation of polyethylene nanocomposites

Kumanayaka, T, Parthasarathy, R and Jollands, M 2009, 'Accelerating effect of montmorillonite on oxidative degradation of polyethylene nanocomposites', Polymer Degradation and Stability, vol. 95, no. 4, pp. 672-676.


Document type: Journal Article
Collection: Journal Articles

Title Accelerating effect of montmorillonite on oxidative degradation of polyethylene nanocomposites
Author(s) Kumanayaka, T
Parthasarathy, R
Jollands, M
Year 2009
Journal name Polymer Degradation and Stability
Volume number 95
Issue number 4
Start page 672
End page 676
Total pages 5
Publisher Elsevier Ltd
Abstract Polyethylene, one of the most widely used packaging materials, can be made biodegradable by blending it with biopolymers such as starch and/or pro-oxidants which are metal complexes (e.g. cobalt stearate, cerium stearate). Recent studies on polyethylene degradation have found that addition of nanoclay, which is used as a filler in polymer composites mainly to enhance their mechanical properties, also increases their photo-oxidative degradation. The present study aims to investigate the degradation of low density polyethylene (LDPE) formulated with nanoclay and evaluate the effect of nanoclay compositions on the overall photo-oxidation process. Photo-oxidative aging of polyethylene and its nanocomposites were carried out in a QUV weathering tester for a maximum period of two weeks. The degradation progress was followed by monitoring the chemical changes of the samples using Fourier transform infrared spectroscopy (FTIR) and gel permeation chromatography (GPC). The results indicate that the incorporation of nanoclay significantly enhances the degradation of polyethylene.
Keyword(s) Polyethylene
Photo-oxidation
Nanocomposites
UV irradiation
DOI - identifier 10.1016/j.polymdegradstab.2009.11.036
Copyright notice © 2009 Elsevier Ltd
ISSN 0141-3910
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