Fabrication of polyvinyl chloride ultrafiltration membranes with stable antifouling property by exploring the pore formation and surface modification capabilities of polyvinyl formal

Polyvinyl chloride (PVC) and polyvinyl formal (PVF) blend ultrafiltration membranes were fabricated by non-solvent induced phase separation (NIPS) method with different casting solution composition. The PVC/PVF membranes were characterized and evaluated by scanning electron microscopy (SEM), Fourier...

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Bibliographic Details
Published in:Journal of membrane science 2014-08, Vol.464, p.100-109
Main Authors: Fan, Xiaochen, Su, Yanlei, Zhao, Xueting, Li, Yafei, Zhang, Runnan, Zhao, Jiaojiao, Jiang, Zhongyi, Zhu, Junao, Ma, Yanyan, Liu, Yuan
Format: Article
Language:English
Subjects:
Antifouling
Applied sciences
Chemistry
Colloidal state and disperse state
Exact sciences and technology
Exchange resins and membranes
Forms of application and semi-finished materials
General and physical chemistry
Membranes
Polymer industry, paints, wood
Polyvinyl chlorides
Polyvinyl fluorides
Pore formation
Porosity
Porous materials
Scanning electron microscopy
Technology of polymers
Ultrafiltration
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Summary:Polyvinyl chloride (PVC) and polyvinyl formal (PVF) blend ultrafiltration membranes were fabricated by non-solvent induced phase separation (NIPS) method with different casting solution composition. The PVC/PVF membranes were characterized and evaluated by scanning electron microscopy (SEM), Fourier Transform Infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), water contact angle measurement and performance measurement. The results showed that PVF played the role of pore formation agent during the NIPS process, and both of porosity and the mean pore size of the membranes were increased with the increased dosage of PVF. Simultaneously, PVF was enriched to membrane surface via spontaneous surface segregation and the membrane surface hydrophilicity was greatly elevated, which implied the remarkably enhanced antifouling property. The robust residence of PVF on the membrane surface was confirmed by a long-term test of incubating membranes in deionized water, which revealed the stable antifouling property of PVC/PVF membranes. Therefore, PVF could be explored as a potential versatile modifier for fabricating high performance ultrafiltration membranes.
ISSN:0376-7388
1873-3123
DOI:10.1016/j.memsci.2014.04.005