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Polymers 2011, 3(3), 1126-1150; doi:10.3390/polym3031126

Towards Extrusion of Ionomers to Process Fuel Cell Membranes

Laboratoire de Rhéologie, BP53, 38041 Grenoble Cedex 9, France
Laboratoire d’Electrochimie et de Physico-chimie des Matériaux et Interfaces, 8402 Saint Martin d’Hères Cedex, France
LMOPS - BP 24 - 69390 Vernaison, France
Authors to whom correspondence should be addressed.
Received: 30 May 2011 / Revised: 4 June 2011 / Accepted: 18 July 2011 / Published: 19 July 2011
(This article belongs to the Special Issue Conductive Polymers)


While Proton Exchange Membrane Fuel Cell (PEMFC) membranes are currently prepared by film casting, this paper demonstrates the feasibility of extrusion, a solvent-free alternative process. Thanks to water-soluble process-aid plasticizers, duly selected, it was possible to extrude acidic and alkaline polysulfone ionomers. Additionally, the feasibility to extrude composites was demonstrated. The impact of the plasticizers on the melt viscosity was investigated. Following the extrusion, the plasticizers were fully removed in water. The extrusion was found to impact neither on the ionomer chains, nor on the performances of the membrane. This environmentally friendly process was successfully validated for a variety of high performance ionomers.
Keywords: ion conducting polymers; extrusion; ionomers; sulfonated polysulfones; PEMFC ion conducting polymers; extrusion; ionomers; sulfonated polysulfones; PEMFC
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Molmeret, Y.; Chabert, F.; Kissi, N.E.; Iojoiu, C.; Mercier, R.; Sanchez, J.-Y. Towards Extrusion of Ionomers to Process Fuel Cell Membranes. Polymers 2011, 3, 1126-1150.

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