Preparation of PU modified PVDF antifouling membrane and its hydrophilic performance

Lü, Xianghong; Wang, Xiankun; Guo, Li; Zhang, Qiuyun; Guo, Xingmei; Li, Laisheng

doi:10.1016/j.memsci.2016.08.018

Cited by 93 publications

(23 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Peaks at 2980 and 1404 cm −1 were attributed of the ―CH 2 stretching and deformation vibrations . The ―CF 2 stretching vibration generated a strong absorption peak at 1180 cm −1 . However, compared with the spectra of pure PVDF (S‐0), some new peaks appeared at 1682, 1270, and 1495 cm −1 , and their intensity increased with increasing the blending ratio of TD‐A.…”

Section: Resultsmentioning

confidence: 99%

“…and amphiphilic polymers (polymethyl methacrylate‐polyethylene glycol‐polymethyl methacrylate [PMMA‐PEG‐PMMA], polymethyl methacrylate‐polydimethylaminoethyl methacrylate [PMMA‐PDMA], polymethyl methacrylate‐polyacrylic acid [PMMA‐PAA], etc.) can be blended into PVDF membrane . Hydrophilic polymers such as polyvinyl pyrrolidone, polyvinyl alcohol, and other additives have been widely reported in literatures in PVDF hydrophilic modification .…”

Section: Introductionmentioning

confidence: 99%

“…Blending modification, which could avoid the disadvantages mentioned above in surface modification, provides a simple one-step process. [13][14][15][16][17][18] Hydrophilic polymers such as polyvinyl pyrrolidone, polyvinyl alcohol, and other additives have been widely reported in literatures in PVDF hydrophilic modification. 7,15,[19][20][21][22] However, it is important to note that the compatibility between hydrophilic polymers and PVDF matrix may not be good enough due to the hydrophobic nature of PVDF.…”

mentioning

confidence: 99%

See 2 more Smart Citations

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

Jin

Lin

et al. 2018

Polymers for Advanced Techs

View full text Add to dashboard Cite

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.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

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

Jin

Lin

et al. 2018

Polymers for Advanced Techs

View full text Add to dashboard Cite

show abstract

“…Polyurethanes (PUs) have been widely used as biomaterials due to their excellent mechanical properties and good biocompatibilities . However, biofouling of bacteria and proteins on PU surfaces is also found frequently which limits the application of PUs as indwelling biomaterials.…”

Section: Introductionmentioning

confidence: 99%

“…Fluorinated PUs prepared by attaching fluorocarbon chains on the soft segment or the hard segment have shown good anti‐adhesion activities against proteins. However, the antifouling properties of fluorinated PUs against bacteria have seldom been reported and the results are contradictory . Furthermore, the relation between microphase separation of fluorinated PUs and their anti‐adhesion activities against bacteria has not been explored to date.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and antifouling activities of fluorinated polyurethanes

Qiao

Yan

et al. 2019

Polymer International

View full text Add to dashboard Cite

A series of fluorinated polyurethanes (FPUs) with various contents of fluorinated chain extender (EF) and the same amount of poly(oxytetramethylene glycol) and diphenylmethanediisocyanate were synthesized to explore the relationship between the surface physicochemical properties and bulk microphase separation structures of these FPUs and their antifouling activities against model bacteria and platelets. The bulk microphase separation of FPUs increased with the amount of incorporated EF. It was found that the surfaces of all FPUs were saturated by a layer of fluorocarbon chains which resulted in similar chemical composition and wetting activities for the three kinds of FPUs. The FPUs with lower or similar microphase separation compared with non-fluorinated polyurethane chain-extended with 1,4-butanediol showed similar or even increased adhesion of bacteria and platelets. Notably, FPU with a higher degree of microphase separation than non-fluorinated polyurethane displayed excellent antifouling activities against both model bacteria and blood platelets. It is therefore concluded that the increased microphase separation of the FPUs results in enhanced antifouling properties.

show abstract

A Large‐Scale Fabrication of Flexible, Ultrathin, and Robust Solid Electrolyte for Solid‐State Lithium‐Sulfur Batteries

Nie,

Zhu,

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

Abstractsolid‐state electrolytes, 3D supporting skeleton, mechanical strength, uniform Li deposition, F‐enriched SEIAll‐solid‐state lithium metal batteries (ASSLMBs) are considered as the most promising candidates for the next‐generation high‐safety batteries. To achieve high energy density in ASSLMBs, it is essential that the solid‐state electrolytes (SSEs) are lightweight, thin, and possess superior electrochemical stability. In this study, we propose a feasible and scalable fabrication approach to construct 3D supporting skeleton using an electro‐blown spinning technique. This skeleton not only enhances the mechanical strength, but also hinders the migration of Li‐salt anions, improving the lithium‐ion transference number of the SSE. This provides a homogeneous distribution of Li‐ion flux and local current density, promoting uniform Li deposition. As a result, based on the mechanically robust and thin SSEs, the Li symmetric cells show outstanding Li plating/stripping reversibility. Besides, a stable interface contact between SSE and Li anode has been established with the formation of a F‐enriched solid electrolyte interface (SEI) layer. The solid‐state Li|sulfurized polyacrylonitrile (Li|SPAN) cell achieves a capacity retention ratio of 94.0% after 350 cycles at 0.5 C. Also, the high‐voltage Li|LCO cell shows a capacity retention of 92.4% at 0.5 C after 500 cycles. This fabrication approach for SSEs is applicable for commercially large‐scale production and application in high‐energy‐density and high‐safety ASSLMBs.This article is protected by copyright. All rights reserved

show abstract

Preparation of PU modified PVDF antifouling membrane and its hydrophilic performance

Cited by 93 publications

References 29 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

Synthesis and antifouling activities of fluorinated polyurethanes

A Large‐Scale Fabrication of Flexible, Ultrathin, and Robust Solid Electrolyte for Solid‐State Lithium‐Sulfur Batteries

Contact Info

Product

Resources

About