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Citation: WANG Qingling, HU Yingmo, BIAN Jing. Synthesis and Characterization of Starch/Lactic Acid Graft Copolymer Catalyzed by Zinc Oxide[J]. Chinese Journal of Applied Chemistry, ;2012, 29(3): 256-259. doi: 10.3724/SP.J.1095.2012.00184 shu

Synthesis and Characterization of Starch/Lactic Acid Graft Copolymer Catalyzed by Zinc Oxide

1.
School of Material Science and Engineering, China University of Geosciences, Beijing 100083, China

Corresponding author: HU Yingmo,
Received Date: 4 May 2011
Available Online: 15 June 2011
Fund Project: 中央高校基本业务费专项资金(2011PY0171) (2011PY0171)

Starch/lactic acid graft copolymer was prepared with in-stiu graft copolymerization catalyzed by zinc oxide.The graft copolymer was characterized by FT-IR,¹H NMR,XRD and SEM.Effects of the reaction temperature,mass ratio between corn starch and lactic acid,amount of the catalyst and the reaction time on the grafting degree were studied.It was found that the highest grafting degree could reach 14.20% with the mass ratio of corn starch to lactic acid being 5:1,and the mass fraction of the catalyst being 1.0% of the lactic acid,and the reaction was carried out at 95℃ for 11 h.
- starch,
- lactic acid,
- zinc oxide,
- graft copolymerization,
- grafting degree
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