Sulfonated aromatic polymers (SAP) are promising inexpensive polymer electrolyte membranes for fuel cells, but there still exist some challenges about this kind of materials including excessive swelling in water, poor mechanical strength, low dimensional stability, especially for highly sulfonated SAP. Crosslinking is widely proposed as an efficient strategy to deal with these challenges. Here, the state-of-the-art of crosslinked SAP is reviewed and some prospects for further development are outlined. The following points are addressed: (i) Crosslinked SAP via covalent bonds, including esterification, addition, Friedel-Crafts reactions and formation of -SO2- bridges; (ii) crosslinked SAP by ionic bonds; (iii) combined covalent and ionic crosslinking.

Hou, H., DI VONA, M.l., Knauth, P. (2012). Building bridges: Crosslinking of sulfonated aromatic polymers-A review. JOURNAL OF MEMBRANE SCIENCE, 423, 113-127 [10.1016/j.memsci.2012.07.038].

Building bridges: Crosslinking of sulfonated aromatic polymers-A review

DI VONA, MARIA LUISA;
2012-12-15

Abstract

Sulfonated aromatic polymers (SAP) are promising inexpensive polymer electrolyte membranes for fuel cells, but there still exist some challenges about this kind of materials including excessive swelling in water, poor mechanical strength, low dimensional stability, especially for highly sulfonated SAP. Crosslinking is widely proposed as an efficient strategy to deal with these challenges. Here, the state-of-the-art of crosslinked SAP is reviewed and some prospects for further development are outlined. The following points are addressed: (i) Crosslinked SAP via covalent bonds, including esterification, addition, Friedel-Crafts reactions and formation of -SO2- bridges; (ii) crosslinked SAP by ionic bonds; (iii) combined covalent and ionic crosslinking.
15-dic-2012
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore CHIM/07 - FONDAMENTI CHIMICI DELLE TECNOLOGIE
English
Con Impact Factor ISI
Polymer electrolytes; Hydrocarbon polymers; Stabilization; Covalent; Ionic; PEMFC
Hou, H., DI VONA, M.l., Knauth, P. (2012). Building bridges: Crosslinking of sulfonated aromatic polymers-A review. JOURNAL OF MEMBRANE SCIENCE, 423, 113-127 [10.1016/j.memsci.2012.07.038].
Hou, H; DI VONA, Ml; Knauth, P
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/78566
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