Thermal Stability and Thermodynamic Properties of Hybrid Proton-Conducting Polyaryl Etherketones

D. Marani,†‡ M. L. Di Vona,† E. Traversa,† S. Licoccia,† I. Beurroies,‡ P. L. Llewellyn,‡ and P. Knauth*‡
Dipartimento di Scienze e Tecnologie Chimiche, Universit di Roma Tor Vergata, via della Ricerca Scientifica 1, 00133 Rome, Italy, and MADIREL (UMR 6121 CNRS), Universit de Provence, Centre St Jrme, 13397 Marseille Cedex 20, France
J. Phys. Chem. B, 2006, 110 (32), pp 15817–15823
DOI: 10.1021/jp062085h
Publication Date (Web): July 20, 2006
Copyright © 2006 American Chemical Society
†

 Università di Roma.

,
‡

 Université de Provence.

,
*

 Author to whom correspondence should be addressed. Tel:  +33 491 637 114; fax:  + 33 491 637 111; e-mail:  knauth@up.univ-mrs.fr.

Abstract

The thermal and structural stability of sulfonated cross-linked PEEK (polyether ether ketone) and its silicon-containing class II hybrid derivatives were characterized by combination of mass spectrometry, infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, and differential scanning calorimetry. Thermodynamic properties of the hybrids were determined, including glass-transition temperature, degree of crystallinity, and thermal stability. The decomposition processes of the hybrid polymers could be consistently interpreted and their energetics quantitatively determined. The introduction of inorganic silanol moieties improves the thermal stability compared to sulfonated products.

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History

  • Published In Issue August 17, 2006
  • Received April 4, 2006
    Revised June 12, 2006

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