Construction of Ion-type Functional Surface of Polyethersulfone Membrane via Surface-initiated Electrochemical-mediated Atom Transfer Radical Polymerization(SI-eATRP)
WU Jiayu1, LI Dan1, KANG Long1, 2, RAN Fen1, 2
1 College of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050; 2 State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050
Abstract: The polymer brushes of poly(sodium p-styrenesulfonate hydrate) was introduced onto polyethersulfone membrane by coating poly(dopamine) and grafting poly(sodium p-styrenesulfonate hydrate) via surface-initiated electrochemical-mediated atom transfer radical polymerization(SI-eATRP), and the monomer concentration was used to adjust the amount of polymer brush. The structure and properties of the modified membrane were characterized by SEM, AFM, XPS, and water contact angle, and the filtration performance was measured by water flux. The results showed that poly(sodium p-styrenesulfonate hydrate) chains were successfully grafted onto the membrane surface, and polymer brushes were tangled to form spherical particles. With the increase of monomer concentration in the electrochemical induced system, the amount of grafting polymer brush increased, thus the water contact angle decreased significantly. The hydrophilicity of the ionic membrane improved, which contributed to the obvious increase of water flux. The BSA rejection rate and flux recovery rate performance have been improved. SI-eATRP method used for surface modification and regulation of polymer film materials has potential application prospects in biocompatible membranes.
吴家宇, 李丹, 康龙, 冉奋. 电化学诱导表面引发原子转移自由基聚合构筑离子型聚醚砜膜功能表面[J]. 《材料导报》期刊社, 2018, 32(4): 549-554.
WU Jiayu, LI Dan, KANG Long, RAN Fen. Construction of Ion-type Functional Surface of Polyethersulfone Membrane via Surface-initiated Electrochemical-mediated Atom Transfer Radical Polymerization(SI-eATRP). Materials Reports, 2018, 32(4): 549-554.
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2018, Vol. 32 
