perfluoro-p-xylene as a new unique monomer for highly stable arylene main-chain ionomers applicable to low-t and high-t fuel cell membranes

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ID: 243352
2015
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Abstract
In this study, we present the synthesis and the characterization of novel functionalized arylene main-chain ionomers based on perfluoro-p-xylene (PFX). The polymers were prepared by polycondensation of PFX and 4,4'-dihydroxybiphenyl or bisphenol 2,2-bis(4-hydroxyphenyl)-hexafluoropropane (bisphenol AF). After polymerization, the PFX unit was still able to undergo nucleophilic aromatic substitution reaction, which was used to introduce phosphonic acid groups into the polymer via a reaction with tris(trimethylsilyl)phosphite. Furthermore, electrophilic sulfonation of these polymers was possible in the bisphenol unit when using H2SO4/SO3 as the sulfonation agent. The so-obtained water-soluble PFX-based polyelectrolytes showed excellent chemical stability and were blended with polybenzimidazoles. The blend membranes formed flexible and mechanically robust films with excellent chemical and thermal stabilities.
Reference Key
hajdok2015polymersperfluoro-p-xylene Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Imre Hajdok;Vladimir Atanasov;Jochen Kerres
Journal Journal of Fluorescence
Year 2015
DOI
10.3390/polym7061066
URL
http://www.mdpi.com/2073-4360/7/6/1066
Keywords
basic-excess blend membraneorganic chemistry

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