摘要：研究3,3,3-三氟丙烯结合量不同的三氟丙烯-醋酸乙烯酯共聚物的酸催化水解反应,并用红外光谱、凝胶色谱、氟离子选择电极电位分析法和差热分析等方法表征聚合物的结构、组成和性能随水解度不同引起的变化。结果表明:共聚物的酯基的水解度随水解时间的延长而增大,72h酯基的转化率可达99%,随着水解度的增大,共聚物的玻璃化转变温度Tg逐渐升高,表面能逐渐增大,明显地呈现表面活性剂性质,但共聚物的数均分子量(M_n)、重均分子量(M_w)及其分布指数(I_PDI)变化不大。

关键词： 共聚物；水解；表面性质

Abstract：The hydrolysis reactions of trifluoropropene-vinglacetate copolymers with different trifluoropropene（TFP） content were studied. The structure， composition and properties of hydrolyzed products were characterized by Fourier transform infrared spectrum （FTIR）， gel permeation chromatography （GPC）， potential analysis and differential scanning calorimeter （DSC）. The results showed that the hydrolyzed degree of ester group in copolymers and glass transition temperature Tg of hydrolyzed copolymers were increase with hydrolysis time prolonging. The results of suface tensin tests showed that the contact angle θ of wetting agent on hydrolyzed copolymer film was lower than that of raw copolymer， so that the surface energy of hydrolyzed copolymer film was higher than that of raw copolymers. Based on these data， it was concluded that the hydrolyzed TFP-VAc copolymer was a novel macromolecule sulfactant which could form an emulsion in water by self-emulsifying. 

Keywords：copolymer； hydrolysis； surface property