Accelerated photo-oxidation of Polyamide 11 nanocomposites under various clays nanofillers
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Date
Authors
Dehouche, Nadjet
Kaci, Mustapha
Focke, Walter Wilhelm
Van der Merwe, Liezel
Journal Title
Journal ISSN
Volume Title
Publisher
Wiley
Abstract
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).
Description
DATA AVAILABILITY STATEMENT : Data available on request from the authors.
Keywords
Clays, Nanocomposites, Photo-oxidation, Polyamide 11 (PA11), Ultraviolet (UV), Fourier transform infrared (FTIR), Onset oxidation temperature (OOT), Differential scanning calorimetry (DSC)
Sustainable Development Goals
Citation
Dehouche, N., Kaci, M., Focke, W.W. & Van der Merwe, L. 2022, 'Accelerated photo-oxidation of Polyamide 11 nanocomposites under various clays nanofillers', Macromolecular Symposia, vol. 404, no. 1, art. 2100352, pp. 1-3, doi : 10.1002/masy.202100352.