The Biodegradability of Modified Starch Grafting Polylactic Acid

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The Biodegradability of Modified Starch Grafting Polylactic Acid
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In this study,a modified starch-g-polylactic acid was synthesized by in situ graft copolymerization.Three modifiers were analyzed in modifying soluble starch,and the copolymerization mechanism was discussed preliminarily.The copolymer was characterized by IR,(H1-NMR) and SEC/MALLS.It is concluded that maleic anhydride was the best modifier,contributing to starch grafting with PLA;molecular weight(Mw)of the copolymer is to be 6.921×104,molecular weight distribution(Mw/Mn) 1.445.In addition,the degradation study showed that mass of the copolymer degraded faster than that of PLA in PBS buffer solution.

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YANG Xiao-ling, WANG Shan. The Biodegradability of Modified Starch Grafting Polylactic Acid[J]. Journal of Food Science and Biotechnology,2010,29(2):197-200.

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Online: June 17,2014
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