Electron beam irradiated hollow fiber nanofiltration membrane
A novel route to the preparation of hollow fiber nanofiltration membranes has been proposed. The method consists of crosslinking of polymer induced by the electron beam irradiation on to the surface of porous membranes. The method was tested with polysulfone (PSf) ultrafiltration hollow fibers and poly(N, N-dimethyl amino)ethyl methacrylate (PDM) in water solution. It has been shown that the surface modification is stabilized by crosslinking of PDM and that the crosslinking does not require any crosslinker. The influence of the preparation conditions of the inner thin film on the separation performance of the hollow fiber was studied. The salt rejections for NaCl and MgSO4 were 11.8％ and 85.8％, respectively. The sugar rejections obtained were 37.4％ for D-mannose and 69.5％ for sucrose. The nanofiltration hollow fiber prepared by electron beam irradiation gives lower rejection values to mono-valance salt than commercially available NF membrane NTR7450. Morphological studies of the hollow fiber surface were conducted by scanning electron microscopy (SEM) and revealed an extreme flat film.
Nanofiltration membrane hollow fiber Electron beams Electron beam irradiation
李国东 王薇 王素芳 杜启云
中空纤维膜材料与膜过程教育部重点实验室,天津工业大学,天津200160,中国
国际会议
成都
英文
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）