A degradation study of polyamide 11/vermiculite nanocomposites under accelerated UV test
| dc.contributor.author | Kaci, Mustapha | |
| dc.contributor.author | Dehouche, Nadjet | |
| dc.contributor.author | Focke, Walter Wilhelm | |
| dc.contributor.author | Van der Merwe, Elizabet Margaretha | |
| dc.date.accessioned | 2019-09-10T13:37:36Z | |
| dc.date.issued | 2019-12 | |
| dc.description.abstract | Accelerated photooxidation under ultraviolet (UV) test of polyamide 11 (PA11) films filled with unmodified vermiculite clay at 5 wt% was investigated up to 600 h. Film samples of ~60‐μm thick were prepared by melt compounding using a cast extruder and exposed to UV light irradiation at λ > 295 nm. Fourier transform infrared (FTIR) spectra indicated similar structural changes occurring in both PA11 and PA11/unmodified vermiculite nanoclay (UVMC) nanocomposite along the photooxidation process, resulting in imides and carboxylic acids as the main carbonyl products. It was however observed that the formation rate of carbonyls in the PA11/UVMC nanocomposite was slower than neat PA11. This behavior is consistent with the yellowing index evolution determined by ultraviolet–visible (UV–vis) spectroscopy. Further, the photooxidation stability of the samples was also evaluated by the onset oxidation temperature determined by differential scanning calorimetry. The results indicated a better stability of the nanocomposite film than neat PA11, corroborating well the data obtained by FTIR and UV–vis techniques. | en_ZA |
| dc.description.department | Chemical Engineering | en_ZA |
| dc.description.department | Chemistry | en_ZA |
| dc.description.embargo | 2020-12-01 | |
| dc.description.librarian | hj2019 | en_ZA |
| dc.description.sponsorship | The DGRSDT‐MESRS (Algeria) | en_ZA |
| dc.description.uri | https://onlinelibrary.wiley.com/journal/15482634 | en_ZA |
| dc.identifier.citation | Kaci, M., Dehouche, N., Focke, W.W. et al. 2019, 'A degradation study of polyamide 11/vermiculite nanocomposites under accelerated UV test', Polymer Engineering and Science, vol. 59, no. 12, pp. 2449-2457. | en_ZA |
| dc.identifier.issn | 0032-3888 (print) | |
| dc.identifier.issn | 1548-2634 (online) | |
| dc.identifier.other | 10.1002/pen.25115 | |
| dc.identifier.uri | http://hdl.handle.net/2263/71328 | |
| dc.language.iso | en | en_ZA |
| dc.publisher | Wiley | en_ZA |
| dc.rights | © 2019 Society of Plastics Engineers. This is the pre-peer reviewed version of the following article : 'A degradation study of polyamide 11/vermiculite nanocomposites under accelerated UV test', Polymer Engineering and Science, vol. 59, no. 12, pp. 2449-2457, 2019. doi : 10.1002/pen.25115. Polymer Engineering and Science has been published in final form at: https://onlinelibrary.wiley.com/journal/15482634. | en_ZA |
| dc.subject | Ultraviolet (UV) | en_ZA |
| dc.subject | Polyamide 11 (PA11) | en_ZA |
| dc.subject | Accelerated photooxidation | en_ZA |
| dc.subject | Clay | en_ZA |
| dc.subject | Unmodified vermiculite (UMVC) | en_ZA |
| dc.subject | Photooxidation | en_ZA |
| dc.subject | Vermiculite | en_ZA |
| dc.subject | Nanocomposites | en_ZA |
| dc.subject | Degradation | en_ZA |
| dc.subject | Fourier transform infrared spectroscopy (FTIR) | en_ZA |
| dc.title | A degradation study of polyamide 11/vermiculite nanocomposites under accelerated UV test | en_ZA |
| dc.type | Postprint Article | en_ZA |