丙烯酸氟烷基酯乳液聚合的研究

Study on emulsion polymerization of perfluoroacrylates

以甲基丙烯酸氟烷基酯(Zonyl TM)、甲基丙烯酸甲酯、丙烯酸正丁酯为原料,采用氧化-还原引发体系,以十二烷基硫酸钠和全氟辛酸铵(1:1)为乳化剂,经超声波预乳化后进行聚合,制备了一系列高氟单体含量的三元共聚物乳液,系统研究了聚合条件对乳液稳定性等影响。考察了氟元素含量对共聚物表面性能的影响,含氟共聚物对水和对油的接触角最高可分别为116°和77.5°。

Several copolymer emulsions with high fluorine content were prepared with perfluoroalkylacrylate （Zonyl TM）, methyl methacrylate （MMA） and butyl acrylate （BA） as monomers, K2S2O8-NaHSO3 as redox initiators and sodiurn dodocyl sulfonate/ammonium perfluorooctanate （1 ： 1） as emulsifiers. The factors of influence on the stabilities of the emulsions with high fluorine content, including emulsifiers, methods of pre-emulsification and initiators, were investigated in detailed. The surface properties of the copolymers were influenced by the fluorine content, and the contact angles for latex films to water and oil was up to 116° and 77.5° respectively.