alexa Grafting of Styrene onto Commercial PTFE Membrane and Sulfonation for Possible Use in Fuel Cell | OMICS International
ISSN: 2155-9589

Journal of Membrane Science & Technology
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Research Article

Grafting of Styrene onto Commercial PTFE Membrane and Sulfonation for Possible Use in Fuel Cell

E.E. Abdel-Hady1, M.M. El-Toony2*, M.O. Abdel-Hamed1 and A.M. Hammam3

1Physics Department, Faculty of Science, Menia University El-Menia City, Egypt

2National Center for Radiation Research and Technology, Atomic Energy Authority, Egypt

3Ahmad El-Zomr Street, P.O. Box 29- Nasr City, Cairo, Egypt

Corresponding Author:
M.M. El-Toony
National Center for Radiation Research and Technology
Atomic Energy Authority, Egypt
E-mail: [email protected]

Received Date: April 14, 2011; Accepted Date: June 16, 2011; Published Date: June 18, 2011

Citation: Abdel-Hady EE, El-Toony MM, Abdel-Hamed MO, Hammam AM (2011) Grafting of Styrene onto Commercial PTFE Membrane and Sulfonation for Possible Use in Fuel Cell. J Membra Sci Technol 1:108. doi:10.4172/2155-9589.1000108

Copyright: © 2011 Abdel-Hady EE, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Commercial poly tetrafluoroethylene (PTFE) inserted in silica with ratio of 8% was chosen. Gamma irradiation was used for grafting of different ratios of styrene onto membrane in one and / or two steps. Monomers mixture of styrene and each of methacrylic acid or acrylic acid were used as binary monomers for grafting of such membrane to raise the grafting percent and aids proton conductivity. Sulfonation of the grafted membrane was performed for hydrogen proton conduction enhancement. Confirmations of the grafting and sulfonation have been achieved by FTIR investigation while Ion exchange capacity was studied as well. The mechanical properties of the grafted PTFE were tested by hardness tester while their thermal behaviors were investigated using thermal gravimetric analysis. It was found that maximum water uptake percent of the sulfonated membrane reached to 28% by weight. The proton conductivity of the prepared membranes were measured by AC impedance spectroscopic analysis, it was reached to 9.6 x 10-3 Ohm-1 Cm-1 which is comparable to that of Nafion.

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