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以玉米淀粉为接枝骨架，硝酸铈铵为引发剂，甲基丙烯酸甲酯（ＭＭＡ）和醋酸乙烯酯（ＶＡＣ）为接枝单体，进行接枝共聚，研究了单体用量、反应时间、反应温度、引发剂用量以及两单体配比对淀粉甲基丙烯酸甲酯－醋酸乙烯酯接枝共聚反应的影响．结果表明，当单体和淀粉用量比为２∶１、引发剂浓度４．５×１０－３ｍｏｌ／Ｌ、反应温度３０℃、反应时间２ｈ、ＭＭＡ和ＶＡＣ重量比为６∶４时，可得到较高的接枝效率和接枝率．用核磁共振谱对接枝支链进行的化学结构分析表明，ＭＭＡ和ＶＡＣ两种单体基本上是以１∶１的摩尔比进入接枝支链中
The graft copolymerization was carried out by using corn starch as graft skeleton, ammonium cerium nitrate as initiator, and methyl methacrylate (MMA) and vinyl acetate (VAC) as grafting monomers. The effects of monomer amount, reaction time, Effect of reaction temperature, initiator content and the ratio of two monomers on the graft copolymerization of starch methyl methacrylate - vinyl acetate. The results showed that when the ratio of monomer to starch was 2:1, the initiator concentration was 4.5 × 10-3mol / L, the reaction temperature was 30 ℃, the reaction time was 2h and the weight ratio of MMA to VAC was 6: 4, Higher grafting efficiency and grafting rate. The chemical structure analysis of the graft branches by NMR showed that the two monomers MMA and VAC basically entered the graft branches at a molar ratio of 1: 1