Enhancement of pro-degradant performance in polyethylene/ starch blends as a function of distribution

Yu, Long and Chee, Kiong Siew and Liu, Xingxun and Eustathios Petinakis, and Stuart Bateman, and Parveen Sangwan, and Anne Ammala, and Katherine Dean, and Susan Wong-Holmes, and Yuan, Qiang and Farid Samsudin, and Zulkifli Ahamid, (2013) Enhancement of pro-degradant performance in polyethylene/ starch blends as a function of distribution. Journal of Applied Polymer Science, 128 (1). pp. 591-596. ISSN 0021-8995

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Official URL: http://dx.doi.org/10.1002/app.38229

Abstract

The effect of pro-degradant distribution in polyethylene (PE)/starch blends on ultraviolet (UV) photo-oxidative degradation was investigated. Two kinds of pro-degradants, Fe and Co-based, were used in this study. The distribution of pro-degradants in the different phases was varied by a dual step process using a side-feed on a reactive extruder. The variation in mechanical properties and evaluation of carbonyl groups by FTIR were conducted to investigate the effect of degradation following exposure to UV photo-oxidative degradation. It was found that the variation in mechanical properties was higher when the pro-degradants were distributed in the PE phase. The concentration of carbonyl groups increased as a function of UV exposure, and the concentration of carbonyl groups was higher when the pro-degradants were distributed in the PE phase. Micro-cracking was observed on the interface between starch and PE after adding the pro-degradants. When the pro-degradants were distributed in high-density polyethylene (HDPE) phase, the micro-cracks mainly appeared in HDPE matrix, and the density of micro-crack was higher. In general, the function of the pro-degradants in PE/starch blends was enhanced when their distribution was varied within HDPE phase.

Item Type:Article
Uncontrolled Keywords:polyethylene, pro-degradant distribution, ultraviolet (UV)
Subjects:Q Science > Q Science (General)
Divisions:FACULTY > Faculty of Food Science and Nutrition
ID Code:12587
Deposited By:IR Admin
Deposited On:11 May 2016 14:07
Last Modified:11 May 2016 14:07

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