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939757

Sigma-Aldrich

Sulfonated bisphenol-A-polysulfone

new

proton conducting polymer, (degree of sulfonation 90%)

Synonym(s):

Polyaromatic sulfonic acid, SPSF, Sulfonated PSF, Sulfonated aromatic polymer, Sulfonated poly(arylene ether sulfone) ionomer

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About This Item

Linear Formula:
(C27H20Na2O10S3)n(C27H22O4S)m
UNSPSC Code:
13111024

description

degree of sulfonation 70-110%

Quality Level

form

powder

mol wt

20-80 kDa

color

white to beige

mp

>300 °C

functional group

sulfonic acid

polymer architecture

shape: linear

SMILES string

O=S(C1=CC=C(OC(C=C2)=CC=C2C(C)(C)C3=CC=C(OC(C(S(=O)(O[Na])=O)=C4)=CC=C4S(C5=CC=C(O[*])C(S(=O)(O[Na])=O)=C5)(=O)=O)C=C3)C=C1)(C6=CC=C(OC7=CC=C(C(C)(C)C8=CC=C([*])C=C8)C=C7)C=C6)=O

General description

Sulfonated bisphenol-A-polysulfone is a specialized sulfonated aromatic polymer presented in powder form. This unique material, characterized by a high degree of sulfonation (90%) and a molecular weight ranging between 20-80 kDA, boasts distinct properties that set it apart for various applications in different industries. Its chemical structure, which features sulfonic acid groups attached to the aromatic backbone, imbues the polymer with remarkable thermal stability, chemical resistance, and high proton conductivity. These attributes make sulfonated bisphenol-A-polysulfone a valuable material for numerous applications, particularly in the energy and environmental sectors.

Application

One of the significant applications of sulfonated aromatic polymers is in proton exchange membranes (PEMs). PEMs are a critical component in fuel cells, which are devices that convert the chemical energy of a fuel (such as hydrogen) into electrical energy. The high proton conductivity of sulfonated aromatic polymers enables efficient transport of protons across the membrane, facilitating the electrochemical reactions within the fuel cell.

In addition to fuel cells, sulfonated aromatic polymers are also utilized in other energy-related applications. They are employed in redox flow batteries, which store energy by using electrolytes that undergo reversible redox reactions. The chemical stability and proton conductivity of these polymers contribute to the overall performance and longevity of such energy storage systems.

Moreover, sulfonated aromatic polymers find application in water treatment membranes. These membranes are used in processes like reverse osmosis, nanofiltration, and ultrafiltration to separate and purify water by selectively allowing the passage of water molecules while blocking contaminants and impurities. The chemical resistance of sulfonated aromatic polymers makes them suitable for handling harsh environments and maintaining high water permeability.

Furthermore, sulfonated aromatic polymers are explored for their potential in gas separation membranes, where they can be used to selectively separate gases such as hydrogen, carbon dioxide, and oxygen for various industrial processes.

Overall, the unique combination of properties exhibited by sulfonated aromatic polymers, including thermal stability, chemical resistance, and proton conductivity, makes them highly versatile and valuable for applications in fuel cells, energy storage, water treatment, and gas separation. Continued research and development in this area hold the potential for further advancements and innovations in these fields.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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Sulfonated aromatic hydrocarbon polymers as proton exchange membranes for fuel cells
Higashihara, Tomoya et. al.
Polymer, 50(23), 5341-5357 (2009)
Jieun Choi et al.
Polymers, 13(11) (2021-06-03)
The purpose of this study was to investigate the effect of the aliphatic moiety in the sulfonated poly(arylene ether sulfone) (SPAES) backbone. A new monomer (4,4'-dihydroxy-1,6-diphenoxyhexane) was synthesized and polymerized with other monomers to obtain partially alkylated SPAESs. According to

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