Method for preparing anti-pollution composite nanofiltration membrane from alcohol compound

• Main Authors: WANG XIAOLEI, XUE YAXIAN, WANG QI, ZHANG HUAN, ZHAO KONGYIN, HAN SHURUI, YU JIANGTAO, WEI JUNFU
• Format: Patent
• Language: Chinese; English
• Published: 12.04.2022
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention discloses a method for preparing an anti-pollution composite nanofiltration membrane from an alcohol compound, belongs to the technical field of membrane separation, and solves the problems that a polyamide nanofiltration membrane is poor in pollution resistance and a polyester nanofiltration membrane separation layer is low in crosslinking degree. The method for preparing the anti-pollution composite nanofiltration membrane from the alcohol compound comprises the following steps: preparing a porous support membrane; the method comprises the following steps: carrying out interfacial polymerization reaction on a porous support membrane by taking an alcohol compound as a water-phase monomer, polyacyl chloride as an oil-phase monomer and sodium hydroxide or potassium hydroxide as a catalyst; and performing heat treatment after interfacial polymerization to obtain the polyester or polyesteramide composite nanofiltration membrane. According to the preparation method disclosed by the invention, small-