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Advances in Materials Science and Engineering
Volume 2013 (2013), Article ID 326538, 5 pages
http://dx.doi.org/10.1155/2013/326538
Research Article

Effect of Soil Burial on Tensile Properties of Polypropylene/Plasticized Cassava Starch Blends

Department of Polymer and Tensile Engineering, Federal University of Technology, Owerri, Imo State 1526, Nigeria

Received 31 May 2013; Revised 26 September 2013; Accepted 26 September 2013

Academic Editor: Jun Zhang

Copyright © 2013 Henry C. Obasi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Polypropylene (PP)/plasticized cassava starch (PCS) blended with and without compatibilizer (polypropylene-graft-maleic anhydride (PP-g-MA)) via melt blending were prepared for soil burial which lasted for 90 days. Plasticized starch loadings of 0, 10, 20, 30, 40, and 50 wt.% were used, while pp-g-ma was used at 10 wt.% based on starch weight. The PP/PCS and PP/PCS/PP-G-MA blends were evaluated for their tensile properties. It was observed that the tensile strength, elongation at break, and young’s modulus decreased with increases in soil burial time as well as starch content for PP/PCS blends. Similar treads for the tensile properties were observed for PP/PCS/PP-g-MA, but with higher properties as compared to uncompatibilized blends. However, the tensile properties for both PP/PCS and PP/PCS/PP-g-Ma decrease with increases in starch loading and also as the burial period progressed.