Use of maleic anhydride-grafted polyethylene as compatibilizer for HDPE-tapioca starch blends: Effects on mechanical properties

Sailaja, RRN and Chanda, Manas (2001) Use of maleic anhydride-grafted polyethylene as compatibilizer for HDPE-tapioca starch blends: Effects on mechanical properties. In: Journal of Applied Polymer Science, 80 (6). pp. 863-872.

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Abstract

Tapioca starch in both glycerol-plasticized and in unplasticized states was blended with high-density polyethylene (HDPE) using HDPE-g-maleic anhydride as the compatibilizer. The impact and tensile properties of the blends were measured according to ASTM methods. The results reveal that blends containing plasticized starch have better mechanical properties than those containing unplasticized starch. High values of elongation at break at par with those of virgin HDPE could be obtained for blends, even with high loading of plasticized starch. Morphological studies by SEM microscopy of impact-fractured specimens of such blends revealed a ductile fracture, unlike blends with unplasticized starch at such high loadings, which showed brittle fracture, even with the addition of compatibilizer. In general, blends of HDPE and plasticized starch with added compatibilizer show better mechanical properties than similar blends containing unplasticized starch. (C) 2001 John Wiley & Sons, Inc.

Item Type:	Journal Article
Publication:	Journal of Applied Polymer Science
Publisher:	John Wiley and Sons
Additional Information:	Copyright of this article belongs to John Wiley and Sons.
Keywords:	HDPE;HDPE–starch blends;HDPE-g-maleic anhydride;biodegradable polyethylene.
Department/Centre:	Division of Mechanical Sciences > Chemical Engineering
Date Deposited:	09 Nov 2011 05:46
Last Modified:	09 Nov 2011 05:46
URI:	http://eprints.iisc.ac.in/id/eprint/40382

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