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以甲基丙烯酸十二氟庚酯(RfAA)、甲基丙烯酸(MAA)或2-丙烯酰胺-2-甲基丙磺酸(AMPS)、甲基丙烯酸聚乙二醇酯(PEGMA)为共聚单体,以亲氟-亲水-空间位阻的方式,合成了两种含氟高分子表面活性剂P(RfAA-PEGMA-MAA)和P(RfAA-PEGMA-AMPS)。考察了它们对RfAA的乳化性能,探讨了单体种类、单体含量、引发剂用量以及链转移剂用量对单体转化率和聚合物乳化性能的影响。结果表明,n(RfAA)∶n(MAA或AMPS)∶n(PEGMA)=5∶3∶2,引发剂用量为单体总质量的4%,链转移剂用量分别为单体总质量的3%、2%时,所合成的两种含氟高分子表面活性剂对RfAA均表现出了良好的乳化性能,它们的最低表面张力分别为56.3、49.1 mN/m,CMC均约为0.002 g/mL。
(RfAA), methacrylic acid (MAA) or 2-acrylamide-2-methylpropane sulfonic acid (AMPS) and polyethylene glycol methacrylate Two fluorinated polymeric surfactants P (RfAA-PEGMA-MAA) and P (RfAA-PEGMA-AMPS) were synthesized in a fluorophilic-hydrophilic-sterically hindered manner. Their emulsifying properties on RfAA were investigated. The effects of monomer type, monomer content, initiator amount and chain transfer agent on the monomer conversion and the emulsification properties of the polymer were discussed. The results show that the amount of initiator is 4% of the total mass of monomer and the amount of chain transfer agent is 3 % And 2% respectively, the two fluorinated surfactants exhibited good emulsifying properties for RfAA with the lowest surface tensions of 56.3 and 49.1 mN / m, and the CMCs were about 0.002 g / mL.