Hydrophilic Modification of PVDF Microfiltration Membrane with Poly (Ethylene Glycol) Dimethacrylate through Surface Polymerization

Chen, Gui‐E; Sun, Wenping; Kong, Yong; Wu, Qiong; Li, Yongling; Yu, Jun; Xu, Zheng

doi:10.1080/03602559.2017.1315640

Cited by 29 publications

(7 citation statements)

References 38 publications

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“…In the C1s spectrum of the u-VDF-TeFE scaffold, two peaks are present, with maxima at 286.3 and 291 eV that correspond to the molecular groups of CH 2 (marked in blue) and CF 2 (red), respectively [49,50]. Spectrum deconvolution shows an additional third peak at 284.6 eV, which corresponds to the molecular groups of C-C and C-H (marked in green) [51].…”

Section: Physico-chemical and Mechanical Investigation Resultsmentioning

confidence: 99%

Surface Modification of Electrospun Bioresorbable and Biostable Scaffolds by Pulsed DC Magnetron Sputtering of Titanium for Gingival Tissue Regeneration

et al. 2022

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In this study, polymer scaffolds were fabricated from biodegradable poly(lactide-co-glycolide) (PLGA) and from non-biodegradable vinylidene fluoride-tetrafluoroethylene (VDF-TeFE) by electrospinning. These polymer scaffolds were subsequently surface-modified by sputtering titanium targets in an argon atmosphere. Direct current pulsed magnetron sputtering was applied to prevent a significant influence of discharge plasma on the morphology and mechanical properties of the nonwoven polymer scaffolds. The scaffolds with initially hydrophobic properties show higher hydrophilicity and absorbing properties after surface modification with titanium. The surface modification by titanium significantly increases the cell adhesion of both the biodegradable and the non-biodegradable scaffolds. Immunocytochemistry investigations of human gingival fibroblast cells on the surface-modified scaffolds indicate that a PLGA scaffold exhibits higher cell adhesion than a VDF-TeFE scaffold.

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Section: Physico-chemical and Mechanical Investigation Resultsmentioning

confidence: 99%

Surface Modification of Electrospun Bioresorbable and Biostable Scaffolds by Pulsed DC Magnetron Sputtering of Titanium for Gingival Tissue Regeneration

et al. 2022

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“…When used as a membrane material, its hydrophobicity typically leads to severe membrane contamination and consequent reduction in water flux, which hinders its potential application in water phase separation. Three different modification strategies have been reported in the current literature to enhance the hydrophilic properties of PVDF membranes: (1) Hydrophilic fillers doping, including Polyvinyl pyrrolidone (PVP), 12,13 or zirconium dioxide (ZrO2) 8,14,15 and titanium dioxide (TiO2) 11,16 ; (2) hydrophilic polymers, monomers, or functional groups grafting on the backbone of the PVDF [17][18][19] ; (3) hydrophilic polymer coating. 20 The strategy (1) has attracted considerable attention because of its convenient operation, mild conditions, and stable performance.…”

Section: Introductionmentioning

confidence: 99%

Effects of nanosized organic‐rectorite fillers on the morphologies and properties of PVDF UF membrane

Gong,

2024

Polymer Engineering & Sci

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In this study, polyvinylidene fluoride/organic rectorite (PVDF/OREC) organic–inorganic nanocomposite membrane was prepared by phase conversion method. TEM and X‐ray diffraction (XRD) results demonstrate the successful fabrication of nanocomposite ultrafiltration membranes. When the OREC is less than 3 wt%, the nanosheets are mainly stripped and dispersed in the polymer matrix, with different numbers of intercalations. When the impurity content is 5%, the intercalation distribution dominates. When the impurity content increases to 7% and above, it becomes increasingly difficult for PVDF chain segments to enter the OREC interlayer and the OREC particles are dominated by simple blends on the order of micrometers in the polymer matrix. The inclusion of inorganic fillings significantly improved the mechanical properties of the membrane. The yield strength and tensile modulus of the membrane were increased by 53.7% and 574.9%, respectively, with an inorganic filler content of 5 wt%, while the elongation at the break was slightly decreased to 16.2%. This suggests a strong interaction between the OREC nanosheets and the polymer matrix. XRD and FTIR analyses indicate that OREC particles are effective heterogeneous nucleating agents that favor the formation of β‐phase crystals in the film. SEM surface and cross‐section results show that when joining can significantly reduce the average pore size of the membrane surface, large holes tend to reduce the number of holes in the skin layer distribution more uniformly. The AFM results show that the addition of OREC can significantly alter the surface roughness of ultrafiltered membranes, and that the changes in surface roughness and surface pore morphology of membranes with different clay contents are closely related to the distribution of nanoscale silicate sheets in the PVDF matrix.Highlights Prepared PVDF/OREC nanocomposite membranes via a phase‐inversion process. OREC acted as a potent nucleation agent, favoring β crystal formation. OREC resulted in smaller pore sizes and fewer large pores in the skin layer. The hydrophilicity of PVDF membranes was reformative by filling OREC. OREC led to increased water flux and BSA rejection due to pores and hydrophilicity.

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“…The hydrophilic modification of the PVDF membrane surface can introduce hydrophilic groups on the porous membrane surface through specific chemical treatment or coating technology, enhancing its hydrophilicity. Chen et al 13 used polyethylene glycol dimethacrylate (PEGDMA) to graft-modify PVDF and found that the PVDF- g -PEGDMA membrane exhibited a decrease of about 80% in bovine serum albumin (BSA) adsorption compared with the original PVDF membrane, and the water contact angle decreased to 0°, greatly improving the hydrophilicity of the membrane. Xu et al 14 prepared a super-hydrophilic tea polyphenol/silica composite coating, which not only achieved super-hydrophilic modification on the porous PVDF membrane surface but also its inner surface, generating a modified membrane with excellent water permeability and ultrahigh water flux.…”

Section: Introductionmentioning

confidence: 99%

Preparation of N-MG-modified PVDF-CTFE substrate composite nanofiltration membrane and its selective separation of salt and dye

Pan,

et al. 2024

RSC Adv.

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Hydrophilic Modification of PVDF Microfiltration Membrane with Poly (Ethylene Glycol) Dimethacrylate through Surface Polymerization

Cited by 29 publications

References 38 publications

Surface Modification of Electrospun Bioresorbable and Biostable Scaffolds by Pulsed DC Magnetron Sputtering of Titanium for Gingival Tissue Regeneration

Surface Modification of Electrospun Bioresorbable and Biostable Scaffolds by Pulsed DC Magnetron Sputtering of Titanium for Gingival Tissue Regeneration

Effects of nanosized organic‐rectorite fillers on the morphologies and properties of PVDF UF membrane

Preparation of N-MG-modified PVDF-CTFE substrate composite nanofiltration membrane and its selective separation of salt and dye

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