Fabrication of PAN Hollow Fiber Ultrafiltration Membrane with Salt Porogen

Polyacrylonitrile (PAN) hollow fiber ultrafiltration membranes were prepared by wet spinning method using lithium chloride (LiCl) or calcium chloride (CaCl2) as porogen and dimethyl formamide (DMF) as solvent. The effects of PAN/LiCl and PAN/CaCl2 ratios in the spinning solution on the permeation properties of the formed membranes were studied.