Under the condition of high hardness and high electrolyte concentration, polyvinylpyrrolidone (PVP) shows better soil redeposition resistance than acrylate-maleic anhydride copolymer (MA-AA).

• 摘要在高硬度水质及高浓度电解质条件下，聚乙烯吡咯烷柄(PVP)比马来酸酐／丙烯酸共聚物(MA-AA)有更好的抗再沾污性能。