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以可逆加成断裂链转移(RAFT)聚合合成的聚甲基丙烯酸-N,N-二甲氨基乙酯-b-聚丙烯酸六氟丁酯(PDMAEMA-b-PHFBA)为稳定剂,通过无皂乳液聚合技术合成了阳离子型含氟聚丙烯酸酯无皂乳液。用FTIR、1HNMR、TEM、DLS对乳胶粒子和聚合物的结构进行了表征。结果表明,当PDMAEMA-b-PHFBA的用量为总加料质量的2.4%时,乳液的稳定性好,Zeta电位达+57.8 m V,转化率达97.6%,乳胶粒具有明显的核壳结构,粒径分布指数为0.058。将阳离子型含氟聚丙烯酸酯无皂乳液用于皮革涂饰后,随着丙烯酸六氟丁酯用量的增加,涂饰后的皮革对水和二碘甲烷的接触角逐渐增加,当丙烯酸六氟丁酯用量为总单体质量的10%时,涂饰后的皮革对水的接触角为125°,对二碘甲烷的接触角为81.5°。
Poly (N, N-dimethylaminoethyl methacrylate-b-poly (hexafluorobutyl methacrylate) (PDMAEMA-b-PHFBA) synthesized by reversible addition-fragmentation chain transfer (RAFT) Emulsion polymerization synthesis of cationic fluorinated polyacrylate soap-free emulsion. The structures of latex particles and polymers were characterized by FTIR, 1HNMR, TEM and DLS. The results showed that when the dosage of PDMAEM-b-PHFBA was 2.4% of the total mass, the stability of emulsion was good, the Zeta potential was +57.8 mV and the conversion rate was 97.6%. The latex particles had obvious core- The diameter distribution index is 0.058. After the cationic fluorinated polyacrylate soap-free emulsion was applied to leather finishing, the contact angles of leather with water and methylene iodide gradually increased as the amount of hexafluorobutyl acrylate increased. When the hexafluorobutyl acrylate At 10% of the total monomer mass, the finished leather had a water contact angle of 125 ° and a diiodomethane contact angle of 81.5 °.