In the paper,the cationic starch was synthesized with cornstarch methacryloyloxyethyl trimethylammonium chloride (DMC) and acrylamide (AM) by radical copolymerization with special technology.

• 以玉米淀粉、甲基丙烯酰氧基乙基三甲基氯化铵(DMC)和丙烯酰胺(AM)为主要原料,采用特殊工艺通过自由基共聚反应合成了阳离子淀粉。