NDLI: Abiotic Oxidation Studies of Oxo-biodegradable Polyethylene

Content Provider	Springer Nature Link
Author	Reddy, M. M. Gupta, Rahul K. Gupta, Rakesh K. Bhattacharya, S. N. Parthasarathy, R.
Copyright Year	2008
Abstract	The best approach to induce oxo-biodegradation in polyethylene is the use of special additives known as pro-oxidants. Pro-oxidants accelerate abiotic oxidation and subsequent polymer chain cleavage rendering the product apparently more susceptible to biodegradation. In this work, the abiotic oxidation is studied to understand how the addition of nanoclay affects the oxidation rate and the degradation mechanism of oxo-biodegradable polyethylene. In order to achieve this, the following materials were used in this study: (1) polyethylene (PE), (2) oxo-biodegradable polyethylene (OPE), (3) polyethylene nanocomposite (PENac), and (4) oxo-biodegradable polyethylene nanocomposite (OPENac). Wide-Angle X-ray scattering (WAXS) and Transmission Electron Microscopy (TEM) studies reveal that grafting in the preparation of composites helps to achieve mixed intercalated/exfoliated morphology in PENac and OPENac. Abiotic oxidation was carried out in an oven for a period of 14 days at 70 °C with air supply. The effect of abiotic oxidation was evaluated by measuring the changes in tensile strength, elongation at break, carbonyl index and molecular weight. Results show that OPE and OPENac are more susceptible to oxidation than PENac. The molecular weight distribution data obtained from GPC reveal that the addition of nanoclay does not alter the oxidation mechanism in OPE significantly.
Starting Page	27
Ending Page	34
Page Count	8
File Format	PDF
ISSN	15662543
Journal	Journal of Polymers and the Environment
Volume Number	16
Issue Number	1
e-ISSN	15728900
Language	English
Publisher	Springer US
Publisher Date	2008-01-24
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polyethylene Nanocomposites Thermo-oxidation Abiotic oxidation Biodegradation Polymer Sciences
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Environmental Engineering Polymers and Plastics

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