d区锰后过渡元素Ni、Cu等的二价离子分别与NdHSO_3组成二元引发体系,在较低温度下的空气气氛即可引发丙烯酰胺聚合。在25～45℃下反应相同时间的产率按Ni、Cu、Zn体系的顺序递增,而在50℃以上则按相同的顺序递减。在二价离子的一定浓度范围内,产物分子量同In[M~(2+)]呈负斜率线性关系。依据实验结果,由这些二元体系引发的丙烯酰胺聚合反应同时存在着氧化还原引发和配合引发两种机理。 The divalent ions of Ni, Cu and other divalent ions in the d-zone, respectively, form a binary initiation system with NdHSO_3, and the polymerization of acrylamide can be initiated in the air atmosphere at a lower temperature. At 25-45 ° C, the yield of the reaction at the same time increased in the order of Ni, Cu, and Zn systems, while decreasing above 50 ° C decreased in the same order. At a certain concentration of divalent ions, the molecular weight of the product shows a negative slope linear relationship with In [M ~ (2+)]. According to the experimental results, two mechanisms of acrylamide polymerization initiated by these binary systems exist at the same time: redox initiation and coordination initiation.