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Thermal stability and thermodynamic properties of hybrid proton-conducting polyaryl etherketones.

Marani D, Di Vona ML, Traversa E, Licoccia S, Beurroies I, Llewellyn PL, Knauth P

Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma "Tor Vergata", via della Ricerca Scientifica 1, 00133 Rome, Italy.

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.

Published 10 August 2006 in J Phys Chem B Condens Matter Mater Surf Interfaces Biophys, 110(32): 15817-23.
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