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Degradation studies during water absorption, aerobic biodegradation, and soil burial of biobased thermoplastic starch from agricultural waste/polypropylene blends
Author(s) -
Pang MingMeng,
Pun MengYan,
Ishak Zainal Arifin Mohd.
Publication year - 2013
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.39123
Subject(s) - starch , thermoplastic , biodegradation , absorption of water , amylopectin , amylose , polypropylene , materials science , degradation (telecommunications) , ultimate tensile strength , pulp and paper industry , composite material , chemistry , organic chemistry , telecommunications , computer science , engineering
Thermoplastic starch (TPS) from agricultural waste consisting of different amylose/amylopectin ratios was blended with polypropylene (PP) for degradation studies. The agricultural waste material was obtained from seeds and tubers with low starch contents of ∼50%. Non‐Fickian behavior was observed for the water absorption test, and water uptake increased with increases in amylopectin content. The biodegradation was assessed based on the extent of carbon conversion, and was found to be dependent on the water absorption behavior and molecular structure of the starch component. Outdoor soil burial showed greater weight loss and deterioration in tensile properties compared to indoor soil burial. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013