CRCU

Chemical Research in Chinese Universities ›› 1990, Vol. 6 ›› Issue (2): 149-154.

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Studies on the Graft Copolymerization of Methyl Acrylate and Ethyl Acrylate onto Corn Starch Using Potassium Persulfate-Sodium Thiosulphatc as Initiation System

Wu Gongsheng1, Wang Bin2   

  1. 1. Department of Chemistry, Quigdao University, Qingdao;
    2. Department of Chemistry,Daqing Oil College,Daqing
  • Received:1989-07-30 Online:1990-04-24 Published:2011-09-09

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Abstract: Grafting copolymerizations of methyl acrylate(MA) and ethyl acrylate(EA) onto corn starch, respectively, initiated by potassium persulfate-sodium thiosulphate (KPS-STS) redox system, were studied. The structures of poly(MA)-g-starch and poly(EA)-g-starch were characterized by IR, SEMand X-ray diffraction. Experimental results show that KPS-STSis an efficient initiation system for grafting of MAand EAonto corn starch. The maximum percent grafting was obtained at [KPS] of 6.0×10-5mol/L, [STS] of 1.8×103mol/L, [M] of 6.0×104mol/L, S:L=4:100 at 40℃ for 6 h. The reactivity order is MA>EA.

Key words: Methyl acrylate, Ethyl acrylatc. Graft copolymerization, Starch