Structural changes of polysulfone membrane use for hemodialysis in the consecutive regime: nanometric analysis by AFM

Batina, Nikola; Acosta-García, M. C.; Pérez, Angélica Ávalos; Ramírez, Mario A.; Franco, Martha; Gravas, Héctor Pérez; Méndez, Miguel Cadena

doi:10.1117/12.2027844

Cited by 2 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This behavior can be explained by the fact that the molecules have more time and space to reorganize in a uniform way. Additionally, in contrast to the results reported by Batina et al [23], the roughness values obtained for both membranes in this study are smaller, indicating the membranes are smoother. It is worth noting that according to Macanás [24], transport properties should not be affected by small irregularities on the membrane surface.…”

Section: Membrane Manufacturingcontrasting

confidence: 56%

Characterization of a Polymeric Membrane for the Separation of Hydrogen in a Mixture with CO2

Malagón-Romero¹,

Ladino²,

Ortiz³

et al. 2016

TOEFJ

View full text Add to dashboard Cite

Abstract:Hydrogen is expected to play an important role as a clean, reliable and renewable energy source. A key challenge is the production of hydrogen in an economically and environmentally sustainable way on an industrial scale. One promising method of hydrogen production is via biological processes using agricultural resources, where the hydrogen is found to be mixed with other gases, such as carbon dioxide. Thus, to separate hydrogen from the mixture, it is challenging to implement and evaluate a simple, low cost, reliable and efficient separation process. So, the aim of this work was to develop a polymeric membrane for hydrogen separation. The developed membranes were made of polysulfone via phase inversion by a controlled evaporation method with 5 wt % and 10 wt % of polysulfone resulting in thicknesses of 132 and 239 micrometers, respectively. Membrane characterization was performed using scanning electron microscopy (SEM), differential scanning calorimetry (DSC), atomic force microscopy (AFM), and ASTM D882 tensile test. Performance was characterized using a 2 3 factorial experiment using the time lag method, comparing the results with those from gas chromatography (GC). As a result, developed membranes exhibited dense microstructures, low values of RMS roughness, and glass transition temperatures of approximately 191.75 °C and 190.43 °C for the 5 wt % and 10 wt % membranes, respectively. Performance results for the given membranes showed a hydrogen selectivity of 8.20 for an evaluated gas mixture 54% hydrogen and 46% carbon dioxide. According to selectivity achieved, H 2 separation from carbon dioxide is feasible with possibilities of scalability. These results are important for consolidating hydrogen production from biological processes.

show abstract

Section: Membrane Manufacturingcontrasting

confidence: 56%

Characterization of a Polymeric Membrane for the Separation of Hydrogen in a Mixture with CO2

Malagón-Romero¹,

Ladino²,

Ortiz³

et al. 2016

TOEFJ

View full text Add to dashboard Cite

show abstract

“…The smooth surface had a positive effect on the biocontamination resistance of the membrane. It inhibited the adsorption of platelets and proteins, thus improving the anticoagulant capacity of the heparin‐mimetic modified PES/TA membrane 48,49 …”

Section: Resultsmentioning

confidence: 99%

“…It inhibited the adsorption of platelets and proteins, thus improving the anticoagulant capacity of the heparinmimetic modified PES/TA membrane. 48,49 3.2.2 | Hydrophilic and dialysis properties of the surface-modified PES/TA membrane As shown in Figure 8(a), the WCA and PWF values of the M0, M1, M0-TSD and M1-TSD membranes were determined. The WCAs of M0-TSD and M1-TSD were 51.8 and 43.9 , respectively, and both were much smaller than they were before modification.…”

Section: Elemental and Morphological Analysis Of The Surface-modified...mentioning

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

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

Structural changes of polysulfone membrane use for hemodialysis in the consecutive regime: nanometric analysis by AFM

Cited by 2 publications

References 6 publications

Characterization of a Polymeric Membrane for the Separation of Hydrogen in a Mixture with CO2

Characterization of a Polymeric Membrane for the Separation of Hydrogen in a Mixture with CO2

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

Contact Info

Product

Resources

About