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- Title
Accelerated Photo‐Oxidation of Polyamide 11 Nanocomposites under Various Clays Nanofillers.
- Authors
Dehouche, Nadjet; Kaci, Mustapha; Focke, Walter Wilhelm; Van Der Merwe, Liezel
- 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).
- Subjects
POLYAMIDES; NANOCOMPOSITE materials; HALLOYSITE; DIFFERENTIAL scanning calorimetry; OXIDATION kinetics; CLAY; ULTRAVIOLET-visible spectroscopy
- Publication
Macromolecular Symposia, 2022, Vol 404, Issue 1, p1
- ISSN
1022-1360
- Publication type
Article
- DOI
10.1002/masy.202100352