Preparation and characterization of poly(vinylidene fluoride) (PVDF) based ultrafiltration membranes using nano γ-Al2O3

Poly(vinylidene fluoride) (PVDF) based ultrafiltration membranes were prepared from a PVDF/nano γ-Al2O3 complex suspension where the γ-Al2O3 is well dispersed. The effect of nano γ-Al2O3 concentration on the membrane performances was investigated. Surface chemical compositions, surface and cross-section morphologies and hydrophilicity of the membranes were characterized by Fourier transform infrared spectroscopy (FTIR), Differential Scanning Calorimeter (DSC), Scanning Electron Microscopy (SEM) and contact angle measurement, respectively. The mechanical strength of the membranes was also investigated. Permeation experiments were conducted to evaluate the water flux. Both static and dynamic BSA fouling resistance performances were investigated. All the experimental results indicate that the new PVDF ultrafiltration membranes demonstrate better separation performances over the pure PVDF membranes.

[1]  K. Neoh,et al.  Poly(vinylidene fluoride) with Grafted Poly(ethylene glycol) Side Chains via the RAFT-Mediated Process and Pore Size Control of the Copolymer Membranes , 2003 .

[2]  Yiwang Chen,et al.  Controlled grafting from poly(vinylidene fluoride) films by surface‐initiated reversible addition–fragmentation chain transfer polymerization , 2006 .

[3]  Huarong Nie,et al.  Controlled grafting from poly(vinylidene fluoride) microfiltration membranes via reverse atom transfer radical polymerization and antifouling properties , 2007 .

[4]  Cheng‐Chien Wang,et al.  Preparation and characterization of a novel bipolar membrane by plasma-induced polymerization , 2008 .

[5]  Xiaoxuan Liu,et al.  Novel thermo-sensitive membranes prepared by rapid bulk photo-grafting polymerization of N,N-diethylacrylamide onto the microfiltration membranes Nylon , 2006 .

[6]  H. Zhong,et al.  Anti-fouling ultrafiltration membrane prepared from polysulfone-graft-methyl acrylate copolymers by UV-induced grafting method. , 2008, Journal of environmental sciences.

[7]  R. Boom,et al.  Recent advances in the formation of phase inversion membranes made from amorphous or semi-crystalline polymers , 1996 .

[8]  K. Neoh,et al.  Functional and surface-active membranes from poly(vinylidene fluoride)-graft-poly(acrylic acid) prepared via RAFT-mediated graft copolymerization. , 2004, Langmuir : the ACS journal of surfaces and colloids.

[9]  Anne M. Mayes,et al.  Design and performance of foul-resistant poly(vinylidene fluoride) membranes prepared in a single-step by surface segregation , 2002 .

[10]  K. Neoh,et al.  Surface-initiated atom transfer radical polymerization on poly(vinylidene fluoride) membrane for antibacterial ability. , 2005, Macromolecular bioscience.

[11]  A. Ismail,et al.  PSSA pore-filled PVDF membranes by simultaneous electron beam irradiation: Preparation and transport characteristics of protons and methanol , 2006 .

[12]  Yiwang Chen,et al.  Controlled grafting of polymer brushes on poly(vinylidene fluoride) films by surface-initiated atom transfer radical polymerization , 2006 .

[13]  J. Watts,et al.  Surface modification of poly(vinylidene fluoride) by alkaline treatment Part 2. Process modification by the use of phase transfer catalysts , 2001 .

[14]  Dongmei Liu,et al.  Atom transfer radical polymerization directly from poly(vinylidene fluoride): Surface and antifouling properties , 2006 .

[15]  A. Mayes,et al.  Preparation of Protein-Resistant Surfaces on Poly(vinylidene fluoride) Membranes via Surface Segregation , 1999 .

[16]  H. Kubota,et al.  Novel UV-induced photografting process for preparing poly(tetrafluoroethylene)-based proton-conducting membranes , 2007 .

[17]  S. Ramakrishna,et al.  Plasma-induced graft copolymerization of poly(methacrylic acid) on electrospun poly(vinylidene fluoride) nanofiber membrane. , 2007, Langmuir : the ACS journal of surfaces and colloids.

[18]  Yiwang Chen,et al.  SURFACE MODIFICATION OF POLY(VINYLIDENE FLUORIDE) FILMS BY CONTROLLED GRAFTING POLYMER BRUSHES , 2005 .

[19]  A. Mayes,et al.  ATRP of Amphiphilic Graft Copolymers Based on PVDF and Their Use as Membrane Additives , 2002 .

[20]  Bao-ku Zhu,et al.  Improving the hydrophilicity of poly(vinylidene fluoride) porous membranes by electron beam initiated surface grafting of AA/SSS binary monomers , 2006 .

[21]  Bao-Ku Zhu,et al.  Surface immobilization of polymer brushes onto porous poly(vinylidene fluoride) membrane by electron beam to improve the hydrophilicity and fouling resistance , 2007 .

[22]  Bao-ku Zhu,et al.  Preparation and characterization of poly(vinyl chloride)‐graft‐acrylic acid membrane by electron beam , 2007 .

[23]  I. Luzinov,et al.  Surface modification of microporous PVDF membranes by ATRP , 2005 .