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Membranes 2015, 5(1), 120-135; doi:10.3390/membranes5010120

Preparation and Preliminary Dialysis Performance Research of Polyvinylidene Fluoride Hollow Fiber Membranes

1
Institute of Biological and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China
2
State Key Laboratory of Hollow Fiber Membrane Materials and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, China
3
Tianjin Third Central Hospitals, Tianjin 300170, China
*
Author to whom correspondence should be addressed.
Academic Editor: Mohamed Khayet
Received: 5 October 2014 / Accepted: 4 February 2015 / Published: 19 March 2015
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Abstract

In this study, the separation properties of Polyvinylidene fluoride (PVDF) hollow fiber hemodialysis membranes were improved by optimizing membrane morphology and structure. The results showed that the PVDF membrane had better mechanical and separation properties than Fresenius Polysulfone High-Flux (F60S) membrane. The PVDF membrane tensile stress at break, tensile elongation and bursting pressure were 11.3 MPa, 395% and 0.625 MPa, respectively. Ultrafiltration (UF) flux of pure water reached 108.2 L∙h−1∙m−2 and rejection of Albumin from bovine serum was 82.3%. The PVDF dialyzers were prepared by centrifugal casting. The influences of membrane area and simulate fluid flow rate on dialysis performance were investigated. The results showed that the clearance rate of urea and Lysozyme (LZM) were improved with increasing membrane area and fluid flow rate while the rejection of albumin from bovine serum (BSA) had little influence. The high-flux PVDF dialyzer UF coefficient reached 62.6 mL/h/mmHg. The PVDF dialyzer with membrane area 0.69 m2 has the highest clearance rate to LZM and urea. The clearance rate of LZM was 66.8% and urea was 87.7%. View Full-Text
Keywords: Polyvinylidene fluoride (PVDF); preparation; separation properties; high flux; dialysis performance Polyvinylidene fluoride (PVDF); preparation; separation properties; high flux; dialysis performance
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Zhang, Q.; Lu, X.; Liu, J.; Zhao, L. Preparation and Preliminary Dialysis Performance Research of Polyvinylidene Fluoride Hollow Fiber Membranes. Membranes 2015, 5, 120-135.

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