Effect of nonsolvent additives on PES ultrafiltration membrane pore structure

Xiang, Jun; Hua, Xinxin; Dong, Xingfeng; Cheng, Penggao; Zhang, Lei; Du, Wei; Tang, Na

doi:10.1002/app.47525

Cited by 12 publications

(3 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, the residual DMAc content of the membrane can be analyzed in terms of the N content. In past studies, it has been demonstrated that hydrophilic additives may accelerate the phase inversion process 39–41 . It can be observed by XPS spectrogram that the elemental N content decreased significantly with increasing TA addition, which indicated that TA was able to diffuse more DMAc into the water coagulation bath.…”

Section: Resultsmentioning

confidence: 93%

“…In past studies, it has been demonstrated that hydrophilic additives may accelerate the phase inversion process. [39][40][41] It can be observed by XPS spectrogram that the elemental N content decreased significantly with increasing TA addition, which indicated that TA was able to diffuse more DMAc into the water coagulation bath. The decrease in DMAc content may be attributed to the ability of hydrophilic TA to promote phase inversion during the membrane production process, which allowed more DMAc to enter the coagulation bath.…”

Section: Composition and Structural Analysis Of Pes/ta Membranesmentioning

confidence: 99%

See 1 more Smart Citation

Preparation and surface modification of ultrahigh throughput tannic acid coblended polyethersulfone ultrafiltration membranes for hemodialysis

Zhang

Feng

Wei

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

Low dialysis and blood incompatibility efficiency are key issues to be addressed for polymeric hemodialysis membranes. To improve the comprehensive performance of hemodialysis membranes, polyethersulfone (PES)/tannic acid (TA) coblended ultrafiltration membranes were prepared and modified with a heparin-like functionalized TA coating. The coblended TA improved the pore structure of the PES ultrafiltration membrane. And it could also undergo π-π conjugation with the heparin-like functionalized TA in the modified solution, resulting in a greater abundance of modified groups loaded on the membrane surface and pores close to the surface. The modified coating further improved the membrane performance. The physicochemical properties, solute filtration, and blood compatibility properties of the membrane were tested. The effect of TA on the pore structure of the membrane and the presence of modified layers were demonstrated by morphological and chemical structure analyses. The final modified membrane had an ultrahigh water flux (1053 L/m 2 Áh), improved dialysis performance (BSA retention >99%, Lysozyme clearance >30% and Urea clearance >90%), and excellent hemocompatibility (The hemolysis rate was 1.31%, and APTT, PT, and TT values were increased by 40.8%, 74.2%, and 85.9%, respectively). This study shows that TA has great potential for improving the pore structure of polymeric membranes.

show abstract

Section: Resultsmentioning

confidence: 93%

Section: Composition and Structural Analysis Of Pes/ta Membranesmentioning

confidence: 99%

Preparation and surface modification of ultrahigh throughput tannic acid coblended polyethersulfone ultrafiltration membranes for hemodialysis

Zhang

Feng

Wei

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…Due to its importance in membrane production, phase inversion process has been studied to determine the influence of different variables in the final morphology [7][8][9][10] . In these studies, different formation mechanisms were proposed to explain the formation of macrovoids, a cellular morphology, and interconnected structure and the dense layer.…”

Section: Introductionmentioning

confidence: 99%

Water vapor permeation and morphology of polysulfone membranes prepared by phase inversion

2020

View full text Add to dashboard Cite

The aim of this work was to study the effect of different variables in the morphology and water vapor permeation of asymmetric membranes. Different from other works on vapor induced phase inversion this work focus on the formation of a dense skin capable of separating small molecules like gases and on the transport properties of water vapor instead of liquid water. It also correlates the morphologies with the permeability. The results show that higher polymer concentrations lead to denser skin and lower permeability. Water vapor transmission rates varied from 30 to 48 g/m 2 .h depending on membrane morphology. They also show that for membranes with the same type of skin layer the permeability depends on the sub-layer. Finally, the results suggest that different mechanisms were responsible for the formation of the membranes.

show abstract

Polysulfate membrane prepared with a novel porogen for enhanced ultrafiltration performance

Zhou

Shen

Yin

et al. 2022

Chemical Engineering Journal Advances

View full text Add to dashboard Cite

Effect of nonsolvent additives on PES ultrafiltration membrane pore structure

Cited by 12 publications

References 37 publications

Preparation and surface modification of ultrahigh throughput tannic acid coblended polyethersulfone ultrafiltration membranes for hemodialysis

Preparation and surface modification of ultrahigh throughput tannic acid coblended polyethersulfone ultrafiltration membranes for hemodialysis

Water vapor permeation and morphology of polysulfone membranes prepared by phase inversion

Polysulfate membrane prepared with a novel porogen for enhanced ultrafiltration performance

Contact Info

Product

Resources

About