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Fig. 1
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Modification des régions des liaisons C–H (a) et O–H (b) du spectre IRTF du PEI au cours de son vieillissement thermique dans l’air à 250 °C.
Changes in the regions of C–H (a) and O–H bonds (b) of the FTIR spectrum of PEI during its thermal ageing in air at 250 °C.
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