阴离子型聚丙烯酸类助洗剂助洗机理与分散性的探讨

STUDIES ON THE MECHANISM AS BUILDER AND DISPERSIBILITY OF ANIONIC POLYACRYLATE WASHING ASSISTANT

采用溶液聚合法合成丙烯酸 -丙烯酰胺共聚物助洗剂 ,并对其助洗性能进行测定。共聚物的螯合能、碱缓冲能均低 ,而分散能远高于三聚磷酸钠(STPP)。该共聚物的助洗效果是通过较强的分散能力达到的 ,分散作用由高分子对微粒的吸附和在微粒表面的吸附形态决定的 ,且分散性受离子基团含量、分子质量、质量浓度。

Detergency promoter acrylate-acrylamide copolymer was synthesised using solution polymerization and its washing assisting properties were tested. While both of sequesting power and alkaline buffering power of the copolymer were low, its dispersing power was much higher than that of STPP. Washing assisting of the copolymer was effected through its stronger dispersibility. Dispersing power depended on the attachment of polymer to particulates and the form of attachment on them. High dispersibility was influenced by such factors as ionic group content, mass of molecule, mass concentration and impurities.