文献类型：期刊文献

英文题名：Bio-inspired zwitterionic copolymers for antifouling surface and oil-water separation

作者：Niu, Jingqi[1,2];Wang, Hanhan[1,2];Chen, Jiao[1,2];Chen, Xueqian[3];Han, Xia[1,2];Liu, Honglai[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Sci, Shanghai 200237, Peoples R China

年份：2021

卷号：626

外文期刊名：COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

收录：;EI(收录号：20212810624513);WOS:【SCI-EXPANDED(收录号:WOS:000685955600009)】；

基金：The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (No. 21878075, 21878077) , National Natural Science Foundation of China for Innovative Research Groups (No. 51621002) .

语种：英文

外文关键词：Bio-inspired copolymer; Zwitterionic polymer; Grafting-to; Surface modification; Antifouling surface; Oil-water separation

摘要：Inspired by marine mussels, dopamine chemistry was widely used in the field of surface chemistry as an adhesion base for the synthesis of antifouling coatings. Zwitterions have antifouling properties due to their special structures and are widely used in the medical implants, drug delivery, and separation membranes. We combined the catecholic derivative dopamine methacrylamide (DMA) and the zwitterionic monomer 2-methacryloyloxyethylphosphocholine (MPC) to design copolymers with both adhesion property and antifouling property for surface modification. The synthesized P(DMA-co-MPC) copolymers could adsorbed on the substrate surfaces with DMA as anchor by a "grafting to" method. The differences in surface wettability, antifouling property and oilwater separation performance of the copolymer modified surfaces were investigated. It is demonstrated that copolymer-modified substrates have excellent antifouling performance in resistance to protein adsorption and repelling oil attachment, due to its hydrophilic surface in air and the oleophobic surface underwater. Higher MPC content in copolymer would enhance the repulsive force between polymer surface and the colloid probe in water. By using P(DMA-co-MPC)-modified stainless steel mesh and non-woven fabric as separation membranes, nhexane/water mixture could be successfully separated with an efficiency above 97%. The P(DMA-co-MPC) copolymer modified stainless steel mesh possessed good applicability, sustainable recycling and harsh conditions resistance. Additionally, oil-water separation efficiency would be pronounced by modifying the stainless steel mesh in a basic or salty polymer solution.