Preparation and Performance of Starch/PE-LD Compounds Modified by Grafting in Melting State

doi:10.19491/j.issn.1001-9278.2008.10.009

China Plastics ›› 2008, Vol. 22 ›› Issue (10): 42-45 .DOI: 10.19491/j.issn.1001-9278.2008.10.009

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Preparation and Performance of Starch/PE-LD Compounds Modified by Grafting in Melting State

WANG Pei-zhang, LIU Xue

Department of Materials Science and Engineering，Beijing Technology and Business University

Received:1900-01-01 Revised:1900-01-01 Online:2008-10-25 Published:2008-10-25

Abstract

Abstract: The thermoplastic starch was grafted with 6 different monomers in melt state during extrusion. The results of IR and grafting ratio shows that the highest grafting ratio was starch-g-acrylic acid, the grafting ratio was obtained at 2.4 %. IR, XRD, Haake torque rheometer and polarizing microscope were used to investigate the influence of crystal behavior, rheological property and cells configuration of grafted starch/PE-LD. Results indicate that the grafted starch improved compatibility of starch/PE-LD compounds. Starch-g-acrylic acid/PE-LD compound showed the best properties. The dose of acrylic acid was 3 phr.

Key words: starch-based, low density polyethylene, melt grafting, foaming

WANG Pei-zhang, LIU Xue. Preparation and Performance of Starch/PE-LD Compounds Modified by Grafting in Melting State[J]. China Plastics, 2008, 22(10): 42-45 .

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Preparation and Performance of Starch/PE-LD Compounds Modified by Grafting in Melting State

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