疏水缔合型两性絮凝剂的合成及其性能
Speciality Petrochemicals(2009)
Abstract
实验以全氟辛基乙基丙烯酸十二氟庚酯为疏水单体,与丙烯酰胺(AM)、二烯丙基二甲基氯化铵(DM-DAAC)、2-丙烯酰胺基-2-甲基丙磺酸(AMPS)通过自由基胶束共聚法制成氟碳型絮凝剂.结果表明,在n(AM):n(AMPS):n(DMDAAC)=4:2:4,PFMA质量分数0.5%、总单体质量分数30%、引发剂用量0.3%时,合成的四元共聚物对硅藻土悬浮液有较好的絮凝效果.当共聚物添加量15 mg/L、温度为50℃、pH=3时,硅藻土悬浮液的透光率和絮凝时间分别为98.8%和14 s.
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Key words
Amphoteric flocculant,Dodecaflu oroheptyl methacrylate,Fluorocarbon copolymer,Hydrophobicafly associating
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