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Fig. 1
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(a) Modification de la région des hydroxyles du spectre IRTF et (b) Évolution de la concentration des alcools au cours du vieillissement thermique du PEI dans l’air à 250 °C.
(a) Changes in the hydroxyl region of the FTIR spectrum and (b) Changes in the alcohol concentration during the thermal ageing of PEI in air at 250 °C.
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