Journal
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
Volume 74, Issue -, Pages 159-166Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.msec.2017.02.019
Keywords
Polysulfone hemodiafiltration membranes; In situ cross-linked polymerization; Hemocompatibility; Anti-fouling; Poly(vinyl pyrrolidone)
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Funding
- National Natural Science Foundation of China [51603214]
- Ningbo Science and Technology Bureau [2014B81004, 2015B11041]
- National Natural Science Foundation of Ningbo [2015A610029]
- National Natural Science Foundation of Zhejiang Province [LQ16E030004]
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Poly(vinyl pyrrolidone) (PVP) and its copolymers have been widely employed for the modification of hemodiafiltration membranes due to their excellent hydrophilicity, antifouling and hemocompatibility. However, challenges still remain to simplify the modification procedure and to improve the utilization efficiency. In this paper, antifouling and hemocompatibility polysulfone (PSf) hemodiafiltration membranes were fabricated via in situ cross-linked polymerization of vinyl pyrrolidone (VP) and vinyltriethoxysilane (VTEOS) in PSf solutions and non-solvent induced phase separation (NIPS) technique. The prepared membranes were characterized by attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM), which suggested that VP and VTEOS have been cross-linked copolymerized in PSf membranes. The modified PSf membranes with high polymer content showed improved hydrophilicity, ultrafiltration and protein antifouling ability. In addition, the modified PSf membranes showed lower protein adsorption, inhibited platelet adhesion and deformation, prolonged the activated partial thromboplastin time (APTT), prothrombin time (PT), and decreased the content of fibrinogen (FIB) transferring to fibrin, indicating enhanced hemocompatibility. In a word, the present work provides a simple and effective one-step modification method to construct PSf membranes with improved hydrophilicity, antifouling and hemocompatibility. (C) 2017 Elsevier B.V. All rights reserved.
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