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采用Breath Figure法成功制备了聚碳酸酯(PC)多孔膜。考察了PC溶液浓度、环境温度和后处理对所成多孔膜结构和形貌的影响,同时进一步研究了多孔结构对PC多孔膜亲水性、热稳定性与透光率的影响。结果表明:在适当的PC溶液浓度、环境温度以及后处理工艺条件下,采用Breath Figure法能够得到具有规整有序多孔结构的PC薄膜。通过控制PC溶液浓度可有效调整多孔膜的孔径与孔隙率,当PC溶液浓度由0.02 g/ml增至0.06 g/ml时,多孔膜孔径尺寸由2.3μm减小至0.5μm。此外,PC薄膜的多孔结构使其亲水性、热稳定性与透光率得到明显提高,为其进一步应用奠定了基础。
Polycarbonate (PC) porous membranes were successfully prepared by Breath Figure. The effects of concentration of PC solution, ambient temperature and post-treatment on the structure and morphology of the porous membrane were investigated. The effects of porous structure on the hydrophilicity, thermal stability and light transmittance of porous PC membrane were also studied. The results show that PC film with regular ordered porous structure can be obtained by the Breath Figure method under the proper PC solution concentration, ambient temperature and post-treatment conditions. The pore size and porosity of the porous membrane can be effectively adjusted by controlling the concentration of the PC solution. When the concentration of the PC solution is increased from 0.02 g / ml to 0.06 g / ml, the pore size of the porous membrane decreases from 2.3 μm to 0.5 μm. In addition, the porous structure of PC film makes it hydrophilicity, thermal stability and light transmittance was significantly improved, which laid the foundation for its further application.