Effect of Starch Content on the Mechanical Properties of Poly(lactic acid) /Starch Blends

doi:10.19491/j.issn.1001-9278.2009.02.007

China Plastics ›› 2009, Vol. 23 ›› Issue (02): 27-31 .DOI: 10.19491/j.issn.1001-9278.2009.02.007

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Effect of Starch Content on the Mechanical Properties of Poly(lactic acid) /Starch Blends

WU Xue-sen，WANG Wei

Collcgc of Chemieal Engineering，Harbin University of Scicncc and Technology, Harbin 150040，China

Received:2008-09-26 Revised:1900-01-01 Online:2009-02-26 Published:2009-02-26

Abstract

Abstract: PLA and crosslinkcd starch were blended using a rhcomctcr to form a blend，glycerin was used as a compatibilizcr. It was found that tensile and flexural strengths of the blend decreased with increasing starch content，however, the crosslinking of starch somewhat depressed such decreasing. When the loading of crosslinking agent in starch was 6 phr，the mechanical properties were optimal. SEM showed that the crosslinkcd starch was well compatibilizcd with PLA.

Key words: chemically modified starch, poly degradability, mechanical>

WU Xue-sen, WANG Wei. Effect of Starch Content on the Mechanical Properties of Poly(lactic acid) /Starch Blends[J]. China Plastics, 2009, 23(02): 27-31 .

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Effect of Starch Content on the Mechanical Properties of Poly(lactic acid) /Starch Blends

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