It is found that the combination of cationic polymeric microparticles with a cationic or anionic polymer can significantly improve the flocculation and retention efficiency.

• 研究表明用阳离子或阴离子的聚合物与阳离子微粒聚合物联合使用可以改善纸张的匀度和留着率。其机理可能是由于阳离子微粒聚合物的加入产生了更有效的架桥絮聚。