淀粉-丙烯酸-丙烯酰胺三元接枝物的制备及性质研究

在60 Co间歇式共辐射条件下探讨了淀粉与丙烯酸和丙烯酰胺流变相态的接枝共聚反应;采用FTIR和SEM对接枝产物共聚物进行了结构表征;考察了丙烯酰胺和丙烯酸盐单体的配比、原料配比、辐射剂量等因素对聚合物吸水率、耐盐性等的影响。结果表明,在没有添加任何化学引发剂的情况下可以得到较高耐盐性和高吸水速率的淀粉-丙烯酸-丙烯酰胺共聚物,克服了传统生产方法中耐盐性低、吸水速度慢、高污染、高耗能等问题。

Synthesis and Characterization of Acrylamide and/or Acrylic Acid Grafted onto Corn Starch bv Irradiation

The grafting of acrylamide and/or acrylic acid onto starch by 60Co radiation as an initiator was stu-died in conditions of intermittent.This copolymerization allowed for measurement of important parameters,including the glucose monomer-to-starch ratio and the water absorption of the graft copolymer in salt solutions.The acrylamide-to-acrylic acid ratio,were measured at the radiation dose used in kGy.The graft-copolymerization reaction mechanism and morphology of the copolymer were investigated using FTIR scanning electron microscopy.The effects of the stuff-proportion,radiation does,starch pasting,neutralization degree of acrylic acid,radiation does-rate on the graft copolymerization reaction and absorption capacity of high water were investigated.The results showed that the grafting of acrylic acid on starch could be carried out successfully by 60Co radiation without any chemic initiator.Overcome the traditional production methods with low salt tolerance,slowly water absorption,pollution,high-energy consumption and other problems.