Substrate of Plasma Composite Membrane——Preparation of Porous Polysulfone Membrane and Its Effective Factors

This artiele presents the preParation of porous polysulfone menbrane from polysulfone,dimethylformamide and ethylene glyeol monomethyl ether with pore size of 200-300A.The main Parameters,sueh as eomposi-t ionof easting solution and eoagulation bath mixture,temperature of卜eoagulationbath,ambient humidity and state of easting solution,whieh affeet the membrane perfarmanee,are diseussed.Based on seanning electren m ierograph observation of the membrane strueture,reeommendation 15 made of the optimum presription and easting eonditions.