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Sigma-Aldrich

Sulfonated polysulfone

new

proton conducting polymer, degree of sulfonation 70%

Synonym(s):

Sulfonated aromatic polymer for fuel cells and PEMs, Sulfonated poly(arylene ether sulfone) ionomer

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About This Item

Linear Formula:
(C24H14Na2O10S3)n(C24H16O4S)m
UNSPSC Code:
13111024

description

degree of sulfonation: 60-90%

Quality Level

form

powder

mol wt

20-80 kDa

color

white to beige

mp

>300 °C

functional group

sulfonic acid

polymer architecture

shape: linear

InChI

1S/C12H8F2O8S3.C12H8F2O2S.C12H10O2.2Na/c13-9-3-1-7(5-11(9)24(17,18)19)23(15,16)8-2-4-10(14)12(6-8)25(20,21)22;13-9-1-5-11(6-2-9)17(15,16)12-7-3-10(14)4-8-12;13-11-5-1-9(2-6-11)10-3-7-12(14)8-4-10;;/h1-6H,(H,17,18,19)(H,20,21,22);1-8H;1-8,13-14H;;

InChI key

MSKVMJLWNYCWLA-UHFFFAOYSA-N

General description

Our polyaromatic sulfonic acid powder is a high-performance sulfonated aromatic polymer, featuring a degree of sulfonation of 70%. This proton conducting polymer is characterized by the presence of sulfonic acid groups attached to its aromatic backbone. The 70% degree of sulfonation imparts several unique properties to membranes made from it, including higher ionic conductivity and greater water uptake, without significantly compromising their mechanical properties such as breaking strength or tensile modulus. This balance of properties makes our polyaromatic sulfonic acid powder highly versatile and valuable in a wide range of applications that require both performance and durability.

Application

One of the primary applications of sulfonated aromatic polymers is in proton exchange membranes (PEMs), a critical component in fuel cells. Their high proton conductivity facilitates efficient transport of protons across the membrane, enabling the electrochemical reactions within the fuel cell to convert chemical energy into electrical energy. Beyond fuel cells, these polymers are utilized in redox flow batteries, contributing to the performance and longevity of these energy storage systems due to their chemical stability and proton conductivity.
Moreover, sulfonated aromatic polymers are employed in water treatment membranes for processes like reverse osmosis, nanofiltration, and ultrafiltration. Their chemical resistance allows them to withstand harsh environments while maintaining high water permeability, effectively separating and purifying water. These polymers are also explored for their potential in gas separation membranes, where they can selectively separate gases for various industrial processes. Continued research and development in this area promise further advancements and innovations in fuel cells, energy storage, water treatment, and gas separation.

Storage Class Code

11 - Combustible Solids

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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Amin Daryaei et al.
ACS applied materials & interfaces, 9(23), 20067-20075 (2017-05-23)
Two series of high molecular weight disulfonated poly(arylene ether sulfone) random copolymers were synthesized as proton exchange membranes for high-temperature water electrolyzers. These copolymers differ based on the position of the ether bonds on the aromatic rings. One series is
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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