New evidences of accelerating degradation of polyethylene by starch

Liu, Xingxun, Yu, Long, Xie, Fengwei, Petinakis, Eustathios, Sangwan, Parveen, Shen, Shirley, Dean, Katherine, Ammala, Anne and Wong-Holmes, Susan (2013) New evidences of accelerating degradation of polyethylene by starch. Journal of Applied Polymer Science, 130 4: 2282-2287. doi:10.1002/app.39421


Author Liu, Xingxun
Yu, Long
Xie, Fengwei
Petinakis, Eustathios
Sangwan, Parveen
Shen, Shirley
Dean, Katherine
Ammala, Anne
Wong-Holmes, Susan
Title New evidences of accelerating degradation of polyethylene by starch
Journal name Journal of Applied Polymer Science   Check publisher's open access policy
ISSN 0021-8995
1097-4628
Publication date 2013-11
Year available 2013
Sub-type Article (original research)
DOI 10.1002/app.39421
Volume 130
Issue 4
Start page 2282
End page 2287
Total pages 6
Place of publication Hoboken, United States
Publisher John Wiley & Sons
Collection year 2014
Language eng
Abstract An investigation into the effects of starch on both, UV photo-oxidative degradation and biodegradation, of HDPE was focused on the interface between HDPE and starch using Synchrotron-FTIR microscope (SFTIR-M) and scanning electronic microscope (SEM). Carbonyl group detection by FTIR was conducted to evaluate the effect of degradation following exposure to UV photo-oxidative degradation. The results showed that the concentration of carbonyl groups on the interface were higher, suggesting the role of starch in accelerating the UV photo-oxidative degradation of HDPE. The interface between HDPE and starch was further observed under SEM to study the morphological changes after UV photo-oxidative degradation and biodegradation. Micro-cracking was observed on the interface between starch and HDPE after UV photo-oxidative degradation. Tensile testing after UV exposure showed that the variation rate of elongation was higher for the samples containing starch. Starch, an easily biodegradable material, can also act as initial source of nutrients for micro-organisms (bacteria, fungi, and algae) in the blend materials thus enhancing their biodegradability.
Keyword biodegradable
blends
degradation
polyolefins
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
Australian Institute for Bioengineering and Nanotechnology Publications
 
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