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由丙烯酰胺聚合后再与甲醛、二甲胺通过Ｍａｎｎｉｃｈ反应合成了阳离子聚丙烯酰胺，并研究了合成条件对其分子量的影响．
Cationic polyacrylamide was synthesized by polymerization of acrylamide, formaldehyde and dimethylamine by Mannich reaction. The effects of synthesis conditions on its molecular weight were also studied.