Oxo-biodegradation of polyethylene nanocomposites

Kumanayaka, T, Deighton, M, Jollands, M and Parthasarathy, R 2010, 'Oxo-biodegradation of polyethylene nanocomposites', in M. Biggs (ed.) Chemeca 2010: Engineering at the Edge, Adelaide, Australia, 26-29 September, 2010, pp. 1-10.


Document type: Conference Paper
Collection: Conference Papers

Title Oxo-biodegradation of polyethylene nanocomposites
Author(s) Kumanayaka, T
Deighton, M
Jollands, M
Parthasarathy, R
Year 2010
Conference name 38th Annual Australasian Conference of Chemical Engineering (CHEMECA 2010)
Conference location Adelaide, Australia
Conference dates 26-29 September, 2010
Proceedings title Chemeca 2010: Engineering at the Edge
Editor(s) M. Biggs
Publisher Engineers Australia
Place of publication Barton, ACT
Start page 1
End page 10
Total pages 10
Abstract It is well known that polyethylene (PE) can be made degradable by blending it with biopolymers and pro-oxidants but some recent studies reported nanoclay can also help although only in photo-degradation. The present study aims to investigate the effects of pro-oxidant and nanoclay on this photo-oxidation and biodegradation. PE nanocomposites were prepared by a melt intercalation technique using different clay concentrations. Photo-oxidation, which is usually the initial stage in bio-degradation, was achieved by exposing the nanocomposite films to UV irradiation in a weatherometer. Following that, biodegradation was achieved by inoculating the microorganism Pseudomonas aeruginosa on photo-degraded films. The biofilm formed during the biodegradation was observed by environmental scanning electron microscopy (ESEM). The changes in the molecular weight and the concentration of oxidation products formed during the photo-oxidation and biodegradation were monitored by gel permeation chromatography (GPC) and Fourier transform infrared spectroscopy (FTIR), respectively.
Subjects Macromolecular and Materials Chemistry not elsewhere classified
Keyword(s) Chemical engineering
chemistry
Copyright notice © 2010 Engineers Australia
ISBN 9780858259713
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