Gas-initiation under UV and liquid-grafting polymerization on the surface of polysulfone hollow fiber ultrafiltration membrane by dynamic method  

作　　者：SHENYing-jie WUGuang-xia XUShu-guang ZHONGHui ZHANGShao-lai ZHANGXue-zhu ZHAOXian-hong WUTong ZHANGWei-jun 

机构地区：[1]BeijingTongRenTangCompanyLimitedScientificResearchInstitute,Beijing100011,China [2]ResearchCenterforEco-EnvironmentalSciences,ChineseAcademyofSciences,Beijing100085,China

出　　处：《Journal of Environmental Sciences》2005年第3期465-468,共4页环境科学学报（英文版）

基　　金：The Natural Science Foundation of Beijing(No. 2021002); the National Basic Research Priorties Programme(No. 2003CCA02500)

摘　　要：Using the inner-surface of polysulfone hollow fiber ultrafiltration membranes as grafted layer, the method of gas-initiation and liquid-polymerization has been studied, which aimed to adjust the diameter of the pores in the membranes. The degree of polymerization varied with the changes of the parameters, such as irradiation time, monomer concentration, temperature and time of polymerization and so on. The results indicated that using benzophenone(BP) which is in a gaseous condition as photo-initiator, acrylamide as graft monomer, the polyacrylamide chain was grafted on the surface of membranes. After the surface membrane being modified, the water flux and retention altered,and thus it can be seen that the diameter of the pores in the membrane was altered. These experiments contribute to finding a new way to produce the hollow fiber membrane with the small pore size and are extraordinarily worth developing and studying.Using the inner-surface of polysulfone hollow fiber ultrafiltration membranes as grafted layer, the method of gas-initiation and liquid-polymerization has been studied, which aimed to adjust the diameter of the pores in the membranes. The degree of polymerization varied with the changes of the parameters, such as irradiation time, monomer concentration, temperature and time of polymerization and so on. The results indicated that using benzophenone(BP) which is in a gaseous condition as photo-initiator, acrylamide as graft monomer, the polyacrylamide chain was grafted on the surface of membranes. After the surface membrane being modified, the water flux and retention altered,and thus it can be seen that the diameter of the pores in the membrane was altered. These experiments contribute to finding a new way to produce the hollow fiber membrane with the small pore size and are extraordinarily worth developing and studying.

关 键 词：polysulfone hollow fiber membrane PHOTOGRAFTING gas-initiation surface- modification 

分 类 号：TN253[电子电信—物理电子学]