Preparation of PVDF porous membranes by using PVDF-g-PVP powder as an additive and their antifouling property

Xu, Chenqi; Huang, Wei; Lu, Xihua; Yan, Deyue; Chen, Shutao; Huang, Hua

doi:10.1016/j.radphyschem.2012.07.001

Cited by 60 publications

(33 citation statements)

References 30 publications

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“…The absorption peaks at 1682 and 1270 cm −1 were assigned to the C═O and C-N stretching vibration indicating that there was an amide group in TD-A. This exactly corresponds the description in the patent that the synthesis of TD-A in raw materials contains amide groups 36. In addition, the weak bands appeared at 1460, 1495, 2920, and 2973 cm −1 might be caused by the C-N bond and -CH 2 or -CH 3 introduced by TD-A.…”

supporting

confidence: 81%

Hydrophilic modification of polyvinylidene fluoride membrane by blending amphiphilic copolymer via thermally induced phase separation

Jin

Lin

et al. 2018

Polymers for Advanced Techs

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A new amphiphilic copolymer TD‐A is melt‐blended with polyvinylidene fluoride to fabricate hollow fiber membranes in order to improve the hydrophilicity and anti‐fouling property. Membrane samples with different blending ratios are prepared via thermally induced phase separation method. An optimum blending ratio of TD‐A (10 wt%) is determined by a series of characterizations to evaluate the effects of TD‐A contents on membrane properties. The hydrophilicity of the blended membrane samples increases with the increasing blending ratio, but excessive content of TD‐A in blended membranes can lead to structural defects and reduction of mechanical properties. TD‐A blended hollow fiber membrane with optimum blending ratio shows excellent bi‐continuous structure and high water flux. Membrane fouling is remarkably reduced due to the incorporation of TD‐A by static absorption and cyclic filtration tests of bovine serum albumin. Moreover, constant surface chemical compositions and stable flux during long‐term chemical cleaning demonstrate the hydrophilic stability of the blended membrane.

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confidence: 81%

Hydrophilic modification of polyvinylidene fluoride membrane by blending amphiphilic copolymer via thermally induced phase separation

Jin

Lin

et al. 2018

Polymers for Advanced Techs

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“…As far as PVDF is concerned, it is relatively inexpensive, chemically and thermally stable, and membranes from PVDF can be readily prepared by wet-immersion process, such that applications of PVDF membranes are countless. Therefore, numerous teams including ours have focused their efforts on the design of nonfouling or at least low fouling PVDF membranes [2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…Lately, there has been significant progress made regarding the stability of matrix modification by in-situ modification, using water-insoluble copolymers [19][20][21][22], and the examination of fouling resistance at the nano-scale (involving proteins) remains today a major research direction [23,24]. However, we still face numerous challenges.…”

Section: Introductionmentioning

confidence: 99%

“…However, we still face numerous challenges. First, it is noticed that researchers using water-insoluble copolymers actually synthesized a copolymer which is a combination of the matrix polymer and hydrophilic blocks [20][21][22]. This enables facilitating the blending, intermolecular interactions and cross-linking with the original un-modified polymer, but it narrows the possibilities of application of the copolymer with other polymers, that is the preparation of other membranes.…”

Section: Introductionmentioning

confidence: 99%

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Design of PVDF/PEGMA-b-PS-b-PEGMA membranes by VIPS for improved biofouling mitigation

Carretier

Chen

Venault

et al. 2016

Journal of Membrane Science

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OATAO is an open access repository that collects the work of some Toulouse researchers and makes it freely available over the web where possible. This is an author's version published in: a b s t r a c t Literature on the design of efficient nonfouling membranes by in-situ modification is poor, which can be explained by the difficulty to control membrane formation mechanisms when a third material is added to the casting solution, or by the lack of stability of matrix polymers with surface-modifiers. We present polyvinylidene fluoride membranes formed by vapor-induced phase separation and modified with a tri-block copolymer of poly(styrene) and poly(ethylene glycol) methacrylate moieties (PEGMA 124 -b-PS 54 -b-PEGMA 124 ). After characterizing the copolymer, we move onto membrane formation mechanisms. Membrane formation is well controlled and leads to structure close to bi-continuous. Considering the formulation chosen, PVDF/PEGMA 124 -b-PS 54 -b-PEGMA 124 solutions are less viscous and more hydrophilic than virgin PVDF solutions. Both effects promote non-solvent transfer, thus decreasing the chances for crystallization. Hydrophilic capability of membranes is increased from about 59 mg/cm 3 to 650 mg/cm 3 , leading to a severe drop of non-specific protein adsorption, up to 85-90%, also depending on its nature. Biofouling at the micro-scale by modified Escherichia coli and Streptococcus mutans is almost totally inhibited. Finally, biofouling is importantly reduced in dynamic conditions, as measured from the water flux recovery ratio of 69.4%, after 3 water-BSA filtration cycles, much higher than with a commercial hydrophilic PVDF membrane (47.3%). These membranes hold promise as novel materials for water-treatment or blood filtration. n Corresponding authors.

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“…Xu et al [15] prepared a series of PVDF/PVDF-g-PVP blend porous membranes, and the modified PVDF membranes showed excellent antifouling property.…”

Section: Introductionmentioning

confidence: 99%

A facile approach toward multifunctional polyethersulfone membranes viain situcross-linked copolymerization

Sun

Qin

et al. 2015

Journal of Biomaterials Science, Polymer Edition

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In this study, multifunctional polyethersulfone (PES) membranes are prepared via in situ cross-linked copolymerization coupled with a liquid-liquid phase separation technique. Acrylic acid (AA) and N-vinylpyrrolidone (VP) are copolymerized in PES solution, and the solution is then directly used to prepare PES membranes. The infrared and X-ray photoelectron spectroscopy testing, scanning electron microscopy, and water contact angle measurements confirm the successful modification of pristine PES membrane. Protein adsorption, platelet adhesion, plasma recalcification time, and activated partial thromboplastin time assays convince that the modified PES membranes have a better biocompatibility than pristine PES membrane. In addition, the modified membranes showed good protein antifouling property and significant adsorption property of cationic dye. The loading of Ag nanoparticles into the modified membranes endows the composite membranes with antibacterial activity.

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Preparation of PVDF porous membranes by using PVDF-g-PVP powder as an additive and their antifouling property

Cited by 60 publications

References 30 publications

Hydrophilic modification of polyvinylidene fluoride membrane by blending amphiphilic copolymer via thermally induced phase separation

Hydrophilic modification of polyvinylidene fluoride membrane by blending amphiphilic copolymer via thermally induced phase separation

Design of PVDF/PEGMA-b-PS-b-PEGMA membranes by VIPS for improved biofouling mitigation

A facile approach toward multifunctional polyethersulfone membranes viain situcross-linked copolymerization

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