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以聚甲基丙烯酸甲酯(PMMA)和钛酸四丁酯(TBT)的氯仿溶液为铸膜溶液,采用Breath Figures法制备了蜂窝状结构的PMMA/TBT多孔阵列薄膜,采用SEM、IR、XRD对制备的多孔膜进行了表征,探讨了聚合物浓度、PMMA/TBT配比以及水解抑制剂对膜蜂窝状结构的影响.实验结果表明,起始溶液浓度为20～30mg/mL,PMMA/TBT配比大于3时可以得到结构完好的蜂窝状结构.在起始铸膜溶液中添加异丙醇可以提高成膜的效果,减小蜂窝状结构的孔径.IR、XRD分析结果表明,成膜过程中TBT发生了部分水解,形成了氢化氧化钛水合物.
A honeycomb PMMA / TBT porous array thin film was prepared by the Breath Figures method using a solution of polymethylmethacrylate (PMMA) and tetrabutyl titanate (TBT) in chloroform. The films were characterized by SEM, IR, XRD The prepared porous membrane was characterized and the effects of polymer concentration, PMMA / TBT ratio and hydrolysis inhibitors on membrane honeycomb structure were discussed.The experimental results show that the initial concentration of the solution is 20 ~ 30mg / mL, PMMA / TBT When the ratio is greater than 3, the honeycomb structure with good structure can be obtained.The addition of isopropanol to the initial casting solution can improve the film formation and decrease the aperture of the honeycomb structure.The results of IR and XRD show that the film formation process The TBT partially hydrolyzed to form a hydrated titanium oxide hydrate.