PVDF/PEU共混基膜上光接枝制备pH敏感膜的研究  

The study on the pH sensitive membrane prepared by photografting based on the PVDF/PEU blend membrane

作　　者：叶艳秋[1] 龚琦[1] 曾振辉[1] 潘雪琴[1] 董声雄[1] 

机构地区：[1]福州大学化学化工学院,福建福州350002

出　　处：《福州大学学报（自然科学版）》2005年第4期537-541,共5页Journal of Fuzhou University(Natural Science Edition)

基　　金：福建省自然科学基金资助项目(E0310010);福建省教育厅科研资助项目(JB04018)

摘　　要：采用相转化法制备PVDF/PEU共混基膜.在此基膜表面上以二苯甲酮(BP)为光引发剂,丙烯酸(AA)为接枝单体,在紫外光的辐射下引发接枝制备出pH敏感膜.X射线多晶衍射仪(XRD)、扫描电镜(SEM)的表征结果都表明接枝层已经存在于膜表面部分.同时,接枝膜渗透pH值为2～4的水溶液时,渗透通量发生急剧的变化,表现出明显的pH敏感性.The PVDF/PEU blend support membranes were prepared by phase- inversion method, and the grafted membranes with pH- sensitive effect were prepared by UV photografting polyacrylic acid onto the blend support membranes with benzophenone（BP） as initiator. Membranes were characterized with XRD, SEM. The results confirmed that the grafted chains had located on the surface of the membranes, and the grafted membranes exhibited pH - sensitive to the aqueous solutions, with the drastic change in permeability being observed at permeate pH between 2 and 4.

关 键 词：PVDF/PEU 共混基膜 光接枝 pH敏感膜 

分 类 号：TQ028.8[化学工程]