China Plastics ›› 2009, Vol. 23 ›› Issue (02): 51-53 .DOI: 10.19491/j.issn.1001-9278.2009.02.012

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Preparation and Mechanical Properties of Starch Based Biodegradable Material

Tian Hua, Yang Biao, Xu Guozhi, Lin Yi   

  1. Department of Material Science and Engineering, Beijing Technology and Business University, Beijing 100048, China
  • Received:2008-10-15 Revised:1900-01-01 Online:2009-02-26 Published:2009-02-26

Abstract: A biodegradable material was prepared by blending corn starch with polyvinyl alcohol (PVA), water, and glycol. With 25phr of PVA and 30 phr of water, the tensile behavior underwent a brittle-ductile transition, the tensile strength and elongation at break increased from 25.80MPa and 1.11% for neat corn starch to 31.78MPa and 6.24%. When borax and glycol were added, the tensile strength and elongation at break were further increased to 36.26MPa and 11.71%, respectively.

Key words: corn starch, poly (vinyl alcohol), biodegradable material