The Free Radical Antifouling in Self-Polymerized Bur-Tfc Membrane Address in Cip Separation

Abstract

The drug mechanism of BUR was used to explain the material properties for the first time, and the free radical resistance to protein contamination was studied by experimental design. The typical interfacial polymerization process of piperazine (PIP) and triformyl chloride (TMC) was used to add different amounts of dimethoxycurcumin (BUR) to PIP solution and incorporate it into the composite nanofiltration membrane in-situ. Effect of BUR on membrane structures, nanofiltration performances and anti-fouling properties was studied by XPS, SEM, FT-IR and cross-flow membrane module. The experimental results showed that compared with the pristine membrane, the water flux of BUR-TFC membrane could reach 83.75 L·m-2·h-1, and the retention of Na2SO4 and CIP reached 92.3% and 84.5% respectively. The anti-pollution experiments showed that adding a small amount of BUR could effectively improve the anti-pollution performance of the membrane. Bi-functional BUR-TFC has high throughput and high pollution resistance. Herein, for the first time, Chinese medicinal materials with free radical reaction properties were used to prepare polymeric membrane, which made polyamide composite membrane have better nanofiltration properties.

Keywords: Bisdemethoxycurcumin, Interfacial polymerization, Anti-fouling, Free radical reaction