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以盖玻片为基质,采用Langmuir-Blodgett(LB)方法制备含磷酰胆碱基团的两亲性无规共聚物聚(2-甲基丙烯酰氧基乙基磷酰胆碱(MPC)-甲基丙烯酸十八烷基酯(SMA)-γ-甲基丙烯酰氧丙基三甲氧基硅(TSMA)(简称PMST)的单层、双层和三层薄膜.薄膜的表面亲疏水性和表面形貌分别用动态接触角(DCA)和原子力显微镜(AFM)进行测试.结果表明,PMST在盖玻片表面形成了致密的膜层,薄膜的致密程度随层数而增加.在水中前进/后退测试DCA过程中,聚合物薄膜在气相/水相界面存在基团的迁移取向,且膜层内会发生交联.双层膜具有仿细胞外层膜结构,单层和三层膜具有反细胞外层膜结构;双层膜的亲水性比单层和三层膜的要好.
The polycaprolactone (MPC) was prepared by Langmuir-Blodgett (LB) method using glass coverslips as substrate. - monolayers, bilayers and trilaminates of stearyl methacrylate (SMA) -γ-methacryloxypropyltrimethoxysilane (TSMA) (PMST) .The surface of the film is hydrophilic and hydrophobic The results of dynamic contact angle (DCA) and atomic force microscope (AFM) showed that PMST formed a dense film on the surface of the cover glass and the density of the film increased with the number of layers. In the DCA process, the migration direction of the polymer film in the gas / water interface exists and the cross-linking occurs in the film. The bilayer film has the structure of an imitated cell outer membrane and the monolayer and the trilayer film have the anti The structure of the outer membrane of the cell; the hydrophilic nature of the bi-layer is better than that of the monolayer and the trilayer.