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以聚乙烯醇(PVA)为乳化剂,采用Fe2+-H2O2引发体系,以全氟烷基乙基甲基丙烯酸酯(FM)、丙烯酸丁酯(BA)、苯乙烯(St)、甲基丙烯酰氧乙基三甲基氯化铵(DMC)、丙烯酸羟乙酯(HEA)为主要单体进行乳液聚合,制得了阳离子含氟丙烯酸酯多元共聚物乳液。通过FTIR、1HNMR、透射电镜(TEM)、示差扫描量热(DSC)及接触角测试对共聚物结构、乳胶粒径及形态、乳胶膜表面性能进行了研究。结果表明,该乳液的粒子形态呈球形,单分散性良好,平均粒径为90～100nm;随着共聚物中含氟单体质量分数的增加,乳胶膜的表面自由能显著降低;退火处理有助于含氟基团迁移到乳胶膜表面,乳胶膜表面自由能进一步降低。
Polyvinyl alcohol (PVA) was used as emulsifier and Fe2 + -H2O2 initiator system was used. Perfluoroalkylethyl methacrylate (FM), butyl acrylate (BA), styrene Oxyethyl trimethyl ammonium chloride (DMC), hydroxyethyl acrylate (HEA) as the main monomer for emulsion polymerization to prepare a cationic fluorinated acrylate copolymer emulsion. The copolymer structure, particle size and morphology of latex, surface properties of latex film were investigated by FTIR, 1HNMR, TEM, DSC and contact angle measurements. The results show that the particle morphology of the emulsion is spherical and the monodispersity is good, the average particle size is 90 ~ 100nm. With the increase of the mass fraction of fluorine-containing monomer in the copolymer, the surface free energy of the latex film is significantly reduced. Help fluorine-containing groups migrate to the latex film surface, latex film surface free energy to further reduce.