A degradation study of polyamide 11/vermiculite nanocomposites under accelerated UV test

dc.contributor.authorKaci, Mustapha
dc.contributor.authorDehouche, Nadjet
dc.contributor.authorFocke, Walter Wilhelm
dc.contributor.authorVan der Merwe, Elizabet Margaretha
dc.date.accessioned2019-09-10T13:37:36Z
dc.date.issued2019-12
dc.description.abstractAccelerated 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.departmentChemical Engineeringen_ZA
dc.description.departmentChemistryen_ZA
dc.description.embargo2020-12-01
dc.description.librarianhj2019en_ZA
dc.description.sponsorshipThe DGRSDT‐MESRS (Algeria)en_ZA
dc.description.urihttps://onlinelibrary.wiley.com/journal/15482634en_ZA
dc.identifier.citationKaci, 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.issn0032-3888 (print)
dc.identifier.issn1548-2634 (online)
dc.identifier.other10.1002/pen.25115
dc.identifier.urihttp://hdl.handle.net/2263/71328
dc.language.isoenen_ZA
dc.publisherWileyen_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.subjectUltraviolet (UV)en_ZA
dc.subjectPolyamide 11 (PA11)en_ZA
dc.subjectAccelerated photooxidationen_ZA
dc.subjectClayen_ZA
dc.subjectUnmodified vermiculite (UMVC)en_ZA
dc.subjectPhotooxidationen_ZA
dc.subjectVermiculiteen_ZA
dc.subjectNanocompositesen_ZA
dc.subjectDegradationen_ZA
dc.subjectFourier transform infrared spectroscopy (FTIR)en_ZA
dc.titleA degradation study of polyamide 11/vermiculite nanocomposites under accelerated UV testen_ZA
dc.typePostprint Articleen_ZA

Files

Original bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
Kaci_Degradation_2019.pdf
Size:
550.99 KB
Format:
Adobe Portable Document Format
Description:
Postprint Article

License bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description: