Research of preparation of high performance polysulfone substrate for hollow fiber composite membranes
Xiaojin Han · Tianjin Gongye Daxue xuebao · 2009
By taking inorganic salt as the pore-forming additive,and different relative molecular weight of PEG were used to prepare polysulfone(PSF) hollow fiber,which is used as substrate for hollow fiber composite membranes.The results show that the flux of substrate membrane can decrease when the content of PSF increase;the flux increase when the content of the inorganic salt increase;the flux of substrate membranes can obvious increase and the rupture strength decrease with relative molecular weight of PEG increase,and flux achieve maximum when the relative molecular weight of PEG is ten thousand;the flux can increase when the temperature of spinning dope heat up;the flux can decrease and rupture strength can increase with the content of solvent in bore liquid;the flux will increase with air gaps go up.