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Ultrafiltration Membranes Coated by Amphiphilic Copolymers Containing Superhydrophilic Zwitterionic and Hydrophobic POSS Moieties Showing Improved Fouling Resistance/Release Properties
Author(s) -
Jung Kyung Hwa,
Kim Hee Joong,
Kim Mun Hyeon,
Kong Saerom,
Seo Huiran,
Lee JongChan
Publication year - 2020
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.202000348
Subject(s) - membrane , methacrylate , copolymer , ultrafiltration (renal) , materials science , polymer chemistry , polysulfone , superhydrophilicity , chemical engineering , amphiphile , monomer , fouling , contact angle , polymer , chemistry , chromatography , composite material , biochemistry , engineering
Abstract Ultrafiltration membranes coated with amphiphilic copolymers containing superhydrophilic zwitterionic moieties and hydrophobic POSS moieties (PSM‐coated membranes) are prepared. The free radical polymerization of 2‐(dimethylamino)ethyl methacrylate (DMAEMA) and 3‐(3,5,7,9,11,13,15‐heptaisobutylpentacyclo[9.5.1.1 3,9 .1 5,15 .1 7,13 ]octasiloxane‐1‐yl)propyl methacrylate (MAPOSS) monomers is used to prepare a series of copolymers containing different compositions of DMAEMA and MAPOSS units (PDMs). The DMAEMA units in the PDM‐coated membranes are subsequently converted to sulfobetaine methacrylate (SBMA) units using 1,3‐propane sultone (post‐zwitterionization) to give the PSM‐coated membranes. The PSM‐coated membranes show improved fouling resistance/release properties, compared with a neat polysulfone (PSf) membrane. The improved fouling resistance properties of the PSM‐coated membranes are attributed to the superhydrophilic zwitterionic moieties, which form a hydration layer on the membrane surface via electrostatic interactions between the zwitterions and water molecules. Moreover, the total surface energy (γ S ) value of the PSM‐coated membrane is smaller than that of the PSf membrane due to the hydrophobic POSS moieties. This results in the superior fouling release properties of the PSM‐coated membranes.