【摘要】 为提高聚偏氟乙烯超滤膜的亲水性,增强其在水处理中的抗污染能力,以无机纳米氧化铝粒子作为共混剂与聚偏氟乙烯(PVDF)共混,采用相转化法流延工艺制得共混超滤膜.用透射电镜观察纳米氧化铝粒子在膜中的分布;用扫描电镜对膜表面、断面孔结构及孔径进行观测.改性前后超滤膜的测试结果表明,纳米A l2O3的加入改善了PVDF超滤膜的强度、通量、亲水性和抗污染性.更多还原

【Abstract】 In order to improve hydrophilic property and anti-pollution capacity in water treatment of the PVDF ultrafiltration membrane, the PVDF/nano-sized Al2O3 blend ultrafiltration membranes were made by phase reverse method.Distribution of nano-sized Alumina(Al2O3) in the membrane was observed by transmission electron microscopy(TEM).The surface pore size and sectional configuration of the blend membrane were observed by scan electron microscopy(SEM).Mechanical properties,permeability and hydrophilic property of the blend membrane and those of the original membrane were tested.It was found that the intensity,flux,hydrophilic property and antifouling of the PVDF ultrafiltration membrane were improved since nano-sized Al2O3 were added.更多还原