The best process conditions for the polymerization of cationic starch and narrow molecular weight APAM were sorted out in making a kind of dry-strengthening agent for paper.

• 采用阳离子淀粉与窄分子量阴离子聚丙烯酰胺接枝制备纸张增干强剂,优选出了最佳的合成工艺条件,并进行了应用试验,结果证明合成出的产品溶解性好,用量少,增强效果明显。