CRCU

Chemical Research in Chinese Universities ›› 2004, Vol. 20 ›› Issue (2): 232-235.

• Articles • Previous Articles     Next Articles

Synthesis and Biodegradation of St-g-poly(MMA-co-VAc) Initiated by Manganic Pyrophosphate

ZHU Lin-hui1, CHEN Mi-feng2, JI Yan2, XIA Hai-ping1, DING Ma-tai1   

  1. 1. College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China;
    2. College of Chemistry and Environmental Science, Key Laboratory of Environmental Science and Technology of High Education in Henan Province, Henan Normal University, Xinxiang 453002, P. R. China
  • Received:2002-12-05 Online:2004-04-24 Published:2011-08-06
  • Supported by:

    Supported by the Natural Science Foundation of Henan Province(No.97150010)

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Abstract: Methyl methacrylate (MMA) and vinyl acetate (VAc) were grafted onto corn starch with manganic pyrophosphate { [Mn(H2P2O7)3]3-} as the initiator and water as the reaction medium. The influences of reaction conditions, including pH value, initiator concentration, monomer concentration and its composition, on percent grafting and grafting efficiency were investigated. The graft copolymer was characterized by means of IR spectroscopy, scanning electron micrograph(SEM) and 1H NMR spectroscopy. The biodegradation experiment showed that the degradation of corn starch-g-poly(MMA-co-VAc) was mainly from starch. However,after poly VAc in the side chain was transformed into poly vinyl alcohol(PVA), both starch and the grafted side chain could be degraded completely.

Key words: Starch, Graft copolymerization, Manganic pyrophosphate, Biodegradation