TiO2纳米粒子对PVDF超滤膜的结构与性能影响研究  

EFFECT OF TiO_2 SOL ON PVDF ULTRAFILTRATION MEMBRANE STRUCTURE AND PERFORMANCE

作　　者：闫勇[1,2] 赵长伟[1] 曾楚怡[2] 王涛[1,2] 栾兆坤[1] 

机构地区：[1]中国科学院生态环境研究中心,环境水质学国家重点实验室,北京100085 [2]湘潭大学,湖南湘潭411105

出　　处：《水处理技术》2011年第8期35-39,共5页Technology of Water Treatment

基　　金：国家高新技术研究发展计划(863)项目(2009AA062901,2009AA063901)

摘　　要：采用溶胶-凝胶法制备了不同纳米TiO2溶胶含量的TiO2/PVDF超滤膜,探讨TiO2溶胶及其含量对膜性能及结构的影响,并利用X射线衍射、扫描电子显微镜、红外光谱和接触角测量仪表征了复合膜的结构。结果表明,经纳米TiO2溶胶改性后,TiO2/PVDF复合膜的孔隙率、接触角和结构等都发生了显著的变化,在TiO2溶胶添加质量分数为4%时条件下,膜的孔隙率为74.5%,水通量为430.6 L.m-.2h-1,截留率为82.5%。Polyvinylidene fluoride（PVDF）/TiO2 hybrid ultrafiltration（UF） membranes with different nano TiO2 sol content were prepared by sol-gel method,the effects of TiO2 sol and its content on the membrane performance and structure were discussed,and the structure of the composite membranes were investigated by XRD,SEM,FT-IR,contact angle goniometer.The results showed that porosity,contact angle and membrane structure of TiO2 /PVDF membrane all improve after adding nano TiO2 sol,Under the condition of the addition of TiO2 was 4%,porosity was 74.5%,the flux was 430.6 L·m-2·h-1 and retention rate was 82.5%.

关 键 词：TIO2溶胶 聚偏氟乙烯 亲水改性 膜性能 膜结构 

分 类 号：TQ028.8[化学工程]