A novel ionically cross-linked sulfonated polyphenylsulfone (sPPSU) membrane for organic solvent nanofiltration (OSN)

Tashvigh, Akbar Asadi; Luo, Lin; Chung, Tai‐Shung; Weber, Martin; Maletzko, Christian

doi:10.1016/j.memsci.2017.09.076

Cited by 77 publications

(40 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the molecular structure of Fb‐SPI membrane is a branched one as a three‐dimensional network structure because of the existence of branched point (TFAPOB). Therefore, the Fb‐SPI membranes have more molecular chain entanglement than the l‐SPI membrane, and similar phenomena were presented in literatures ,. The elongations at break of Fb‐SPI membranes initially increase and then decrease with increasing content of TFAPOB, the reasons are as below: When the content of TFAPOB is low, raising the branching point and −CF 3 flexible groups of Fb‐SPI membrane is advantageous to its elongation at break.…”

Section: Resultssupporting

confidence: 69%

Fluorine‐Containing Branched Sulfonated Polyimide Membrane for Vanadium Redox Flow Battery Applications

et al. 2018

View full text Add to dashboard Cite

A series of fluorine‐containing branched sulfonated polyimide (Fb‐SPI) membranes with different degrees of branching (0–12 %) were synthesized through polycondensation. The chemical structure of Fb‐SPI‐10 membrane was confirmed using ATR‐FTIR and 1H NMR spectroscopy. The physico‐chemical properties of Fb‐SPI membranes were systematically investigated and compared to linear SPI (l‐SPI) and Nafion 117 membranes. The vanadium‐ion permeabilities of Fb‐SPI membranes (2.45–0.99×10−7 cm2 min−1) are much lower than that of Nafion 117 (17.1×10−7 cm2 min−1) membranes. Besides, the chemical stability of Fb‐SPI membranes is superior to that of l‐SPI membranes. During 500‐time continuous cyclic charge‐discharge measurements, the VRFB assembled with a Fb‐SPI‐10 membrane shows higher coulombic efficiency (98.4–99.7 %), higher or close energy efficiency (69.0–79.7 %) from 40 to 80 mA cm−2, and higher or close capacity retention (52.8–100 %) from 40 to 70 mA cm−2 compared with a device using a Nafion 117 membrane. All of these results demonstrate that the as‐selected Fb‐SPI‐10 membrane has promising potential for VRFB applications.

show abstract

Section: Resultssupporting

confidence: 69%

Fluorine‐Containing Branched Sulfonated Polyimide Membrane for Vanadium Redox Flow Battery Applications

et al. 2018

View full text Add to dashboard Cite

show abstract

“…For example, several aromatic polymer ionomer membranes, such as polybenzimidazole (PBI) [6,7], sulfonated polyphenylene oxide (SPPO) [8], sulfonated polyimide [9][10][11], sulfonated polyethersulfone (SPES) [12,13], sulfonated polyphenylene (SPP) [14], sulfonated polyphenylene sulfone (SPPS) [15], sulfonated polysulfone (SPSU) [16][17][18][19][20][21], sulfonated polyetheretherketone (SPEEK) [22][23][24][25][26][27][28][29][30][31][32][33], and sulfonated polyphenylsulfone (SPPSU) [34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49], are being actively investigated. The rigid molecular chain structures of aromatic polymers provide high thermal stabilities.…”

Section: Introductionmentioning

confidence: 99%

Chemically Crosslinked Sulfonated Polyphenylsulfone (CSPPSU) Membranes for PEM Fuel Cells

2020

View full text Add to dashboard Cite

Sulfonated polyphenylsulfone (SPPSU) with a high ion exchange capacity (IEC) was synthesized using commercially available polyphenylsulfone (PPSU), and a large-area (16 × 18 cm 2 ) crosslinked sulfonated polyphenylsulfone (CSPPSU) membrane was prepared. In addition, we developed an activation process in which the membrane was treated with alkaline and acidic solutions to remove sulfur dioxide (SO 2 ), which forms as a byproduct during heat treatment. CSPPSU membranes obtained using this activation method had high thermal, mechanical and chemical stabilities. In I-V iR free studies for fuel cell evaluation, high performances similar to those using Nafion were obtained. In addition, from the hydrogen (H 2 ) gas crossover characteristics, the durability is much better than that of a Nafion212 membrane. In the studies evaluating the long-term stabilities by using a constant current method, a stability of 4000 h was obtained for the first time. These results indicate that the CSPPSU membrane obtained by using our activation method is promising as a polymer electrolyte membrane.

show abstract

“…Pressuredriven membrane processes are applied for the recovery of homogeneous catalysts from the reaction mixture for the subsequent return to the chemical reactor, nonthermal replacement of solvents in multistage organic syntheses, and recycle of extraction solvents in the production of vegetable oils and purification of fuels [206][207][208]. To increase the membrane resistance, it has been proposed to perform additional crosslinking and thermal treatment [209][210][211].…”

Section: Increasing the Performance Of Pressure-driven Membrane Procementioning

confidence: 99%

Prospects of Membrane Science Development

Apel

Бобрешова

Волков

et al. 2019

Membr. Membr. Technol.

123

View full text Add to dashboard Cite

Membranes are widely used in modern technology. The demand for different types of membranes and membrane processes is increasing every year. This review summarizes the current state of the art and prospects of membrane science developments including membrane materials for gas separation, pervaporation, and pressure-driven membrane processes; ion-exchange, hybrid, and track-etched membranes; membranes for electrochemical sensors; and mathematical modeling of membrane separation processes and ion and water transport in membrane systems. Studies aimed at improving the selectivity and performance of membranes and their stability are surveyed. New approaches to the synthesis and modification of membranes as well as their advanced applications are discussed.

show abstract

A novel ionically cross-linked sulfonated polyphenylsulfone (sPPSU) membrane for organic solvent nanofiltration (OSN)

Cited by 77 publications

References 47 publications

Fluorine‐Containing Branched Sulfonated Polyimide Membrane for Vanadium Redox Flow Battery Applications

Fluorine‐Containing Branched Sulfonated Polyimide Membrane for Vanadium Redox Flow Battery Applications

Chemically Crosslinked Sulfonated Polyphenylsulfone (CSPPSU) Membranes for PEM Fuel Cells

Prospects of Membrane Science Development

Contact Info

Product

Resources

About