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

Article type: Research Article

Authors: SHEN, Ying-jie | WU, Guang-xia | XU, Shu-guang | ZHONG, Hui | ZHANG, Shao-lai | ZHANG, Xue-zhu | ZHAO, Xian-hong | WU, Tong | ZHANG, Wei-jun

Affiliations: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China | Beijing Tong Ren Tang Company Limited Scientific Research Institute, Beijing 100011, China

Note: [] Corresponding author. E-mail: [email protected]

Abstract: 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 soon. 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.

Keywords: polysulfone hollow fiber membrane, photografting, gas-initiation, surface-modification

Journal: Journal of Environmental Sciences, vol. 17, no. 3, pp. 465-468, 2005