The improvement of antibiofouling efficiency of polyethersulfone membrane by functionalization with zwitterionic monomers

► Hollow fiber PES membranes were functionalized with zwitterionic monomers. ► The hydrophilicites of modified PES membrane was remarkably improved. ► The membrane fouling was prevented by the existence of zwitterions-grafted layers. To improve the antifouling properties of a hollow fiber PES membra...

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Bibliographic Details
Published in:Journal of membrane science 2012-05, Vol.401-402, p.292-299
Main Authors: Razi, Fachrul, Sawada, Isao, Ohmukai, Yoshikage, Maruyama, Tatsuo, Matsuyama, Hideto
Format: Article
Language:English
Subjects:
ammonium hydroxide
artificial membranes
bacteria
Biofouling
bovine serum albumin
Chemistry
Colloidal state and disperse state
Exact sciences and technology
filtration
General and physical chemistry
Hollow fiber polyethersulfone membrane
lysozyme
Membranes
Organic fouling
Pseudomonas putida
Surface functionalization
Zwitterionic monomer
zwitterions
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Summary:► Hollow fiber PES membranes were functionalized with zwitterionic monomers. ► The hydrophilicites of modified PES membrane was remarkably improved. ► The membrane fouling was prevented by the existence of zwitterions-grafted layers. To improve the antifouling properties of a hollow fiber PES membrane it was functionalized with the zwitterionic monomers [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl) ammonium hydroxide (MEDSAH) and 2-(methacryloyloxy)ethyl phosphorylcholine (MPC) by photografting. Each modified PES membrane (PES-g-MEDSAH and PES-g-MPC) was investigated for its antifouling properties for organic fouling and biofouling. To evaluate the organic antifouling properties, each membrane was used to filter a solution of bovine serum albumin or lysozyme. For biofouling, the antifouling properties were evaluated by immersion tests and filtration of a Pseudomonas putida solution. The modified PES membranes had better organic antifouling properties and higher biofouling resistance than the unmodified PES membrane. In the immersion test, almost no bacteria were detected on the modified membrane surfaces. Thus, surface functionalization of PES membranes with zwitterionic monomers can improve antifouling properties for organic fouling and biofouling.
ISSN:0376-7388
1873-3123
DOI:10.1016/j.memsci.2012.02.020