Affiliation:
1. State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Membrane Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
Abstract
Functional groups on support membranes are important for the preparation of high-performance membrane adsorbers (MAs). In this work, the effects of different functional groups on support membranes on the adsorption performance of MAs were studied through surface modifications such as alkali treatment, oxidation treatment and polydopamine (PDA) deposition. Our experiment results indicate that chemical bonds are prone to form between C-F on PVDF membrane and amine groups on PEI, which serves to improve the protein adsorption capacity. Furthermore, PDA deposition has the potential to enhance protein adsorption capacity. Introducing a PDA layer on a support membrane with uniform pore size distribution shows potential to improve protein adsorption capacity.
Funder
Fundamental Research Funds for the Central Universities
Subject
Filtration and Separation,Analytical Chemistry