Hydrophilic anti-pollution ultrafiltration membrane and preparation method thereof

• Main Authors: SONG SHIXIN, YANG CHAO, SUN SHULIN, LYU XUE
• Format: Patent
• Language: Chinese; English
• Published: 08.03.2019
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention provides a hydrophilic anti-pollution ultrafiltration membrane and a preparation method thereof and belongs to the technical field of functional macromolecular membrane materials. The method comprises the following steps: under the protection of nitrogen gas, dissolving PVDF (Polyvinylidene Fluoride) into a solvent; then adding an initiator, butyl bromide, methyl methacrylate and polyvinylpylrrolidone for reacting; standing and de-foaming to obtain a casting solution; uniformly mixing absolute ethyl alcohol and de-ionized water to obtain a condensation bath; pouring the obtainedcasting solution on a glass plate and scraping to form a liquid membrane with a uniform thickness; staying in the air and putting into the condensation bath; curing to form a membrane; after the membrane falls off from the glass plate, taking the membrane out from the condensation bath; washing to obtain the hydrophilic anti-pollution ultrafiltration membrane. The ultrafiltration membrane providedby the invention has an e