title: Surface modification of polyethersulfone membranes by blending triblock copolymers of methoxyl poly(ethylene glycol)-polyurethane-methoxyl poly(ethylene glycol).
abstract: The surface of polyethersulfone (PES) membrane was modified by blending triblock copolymers of methoxyl poly(ethylene glycol)-polyurethane-methoxyl poly(ethylene glycol) (mPEG-PU-mPEG), which were synthesized through solution polymerization with mPEG Mns of 500 and 2000, respectively. The PES and PES/mPEG-PU-mPEG blended membranes were prepared through spin coating coupled with liquid-liquid phase separation. FTIR and (1)H NMR analysis confirmed that the triblock copolymers were successfully synthesized. The functional groups and morphologies of the membranes were studied by ATR-FTIR and SEM, respectively. It was found that the triblock copolymers were blended into PES membranes successfully, and the morphologies of the blended membranes were somewhat different from PES membrane. The water contact angles and platelet adhesion were decreased after blending mPEG-PU-mPEG into PES membranes. Meanwhile, the activated partial thromboplastin time (APTT) for the blended membranes increased. The anti-protein-fouling property and permeation property of the blended membranes improved obviously. SEM observation and 3-(4, 5-Dimethylthiazol-2-yl)-2, 5-diphenyl tetrazolium bromide (MTT) assay proved the surfaces of the blended membranes promoted human hepatocytes adhesion and proliferation better than PES membrane.
authors.affiliation: College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, People's Republic of China.
authors.forename: Jingyun
authors.initials: J
authors.lastname: Huang
authors.forename: Jimin
authors.initials: J
authors.lastname: Xue
authors.forename: Kewei
authors.initials: K
authors.lastname: Xiang
authors.forename: Xu
authors.initials: X
authors.lastname: Zhang
authors.forename: Chong
authors.initials: C
authors.lastname: Cheng
authors.forename: Shudong
authors.initials: S
authors.lastname: Sun
authors.forename: Changsheng
authors.initials: C
authors.lastname: Zhao
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry*; D002478:Cells, Cultured; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D011092:Polyethylene Glycols / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D011140:Polyurethanes / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013450:Sulfones / Q000737:chemistry*
chemical_list: D001672:Biocompatible Materials; D011108:Polymers; D011140:Polyurethanes; D013450:Sulfones; C022840:polyether sulfone; D011092:Polyethylene Glycols; C028210:monomethoxypolyethylene glycol