Modified reinforced polysulfone (PSF) membranes are introduced in this
article; its sensitivity to the environmental temperature and humidit
y in membrane formation can be reduced, and the effect of the gelation
medium temperature on membrane pore size can also be improved. We try
to find the membrane's pore formation rule and overcome the defect of
membrane too thick and easily curled so that we can make the producti
on condition of the membrane similar to that of cellulose acetate (CA)
membranes and suitable to continuous pilot scale-up production. We al
so briefly illustrate the effect of polymer concentration on machine-c
ase membranes, the effect of operating pressure on PSF ultrafiltration
(UF) flux, and the trial uses.