Accelerated photo-oxidation of Polyamide 11 nanocomposites under various clays nanofillers

DATA AVAILABILITY STATEMENT : Data available on request from the authors.The effect of various clays nanofillers on the photo-oxidation of polyamide 11 (PA11) has been investigated by accelerated ultraviolet (UV) test up to 780 h. Organo-modified montmorillonite, halloysite nanotubes, and sepiolite were selected and incorporated separately to PA11 at 5 wt.%. The samples were prepared by melt compounding. Fourier transform infrared (FTIR) data showed a linear increase of carbonyl index (CI) in the first 360 h of exposure indicating a rapid oxidation of all samples without any induction period. Further, the nanocomposite samples exhibit faster oxidation kinetics than PA11, being however less pronounced for PA11/sepiolite. This is consistent with both the yellowing index (YI) evolution determined by UV–Vis spectroscopy and also the onset oxidation temperature (OOT) determined by differential scanning calorimetry (DSC).The DGRSDT (Direction Générale de la Recherche Scientifique et du développement Technologique) from Algeria.https://onlinelibrary.wiley.com/journal/15213900hj2023Chemical EngineeringChemistr