writer：Li-Ye Chen, Xiao-Hong Lin, Jing-Gang Gai*
keywords：Polyethylenimine ， Glycidol，Antifouling，Reverse Osmosis，Membrane
source：期刊
specific source：Ind. Eng. Chem. Res., 2018, 57, 2322-2328
Issue time：2018年
Improving
the antifouling performance of the widely used industrial polyamide thin-film-composite reverse osmosis (RO) membrane has
recently attracted increasing attention as the RO membrane is inherently prone
to fouling, which may seriously deteriorate separation performance and membrane
lifespan. In this paper, taking advantage of unreacted acid chloride groups on
the surface of the polyamide membrane, we used multiterminal amino group
polyethylenimine (PEI) as the linker and used glycidol as the hydrophilic
surface modifier to prepare the
antifouling reverse osmosis membrane. We aimed to improve the hydrophilicity of
the RO membrane by increasing the number density of terminal amino groups of
the linker on the polyamide surface. After 9 continuous BSA fouling tests, the flux recovery rate of the glycidol-modified membrane with PEI as linker can reach 98.2%.
The enhanced antifouling effect of the method
using PEI as the linker and glycidol as the hydrophilic modifier offers insights into new types of antifouling RO membrane development
opportunities.