Zazoum, B., David, Éric et Ngô, Anh Dung.
2013.
« LDPE/HDPE/clay nanocomposites: Effects of compatibilizer on the structure and dielectric response ».
Journal of Nanotechnology, vol. 2013.
Compte des citations dans Scopus : 21.
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Résumé
PE/clay nanocomposites were prepared by mixing a commercially available premixed polyethylene/O-MMT masterbatch into a polyethylene blend matrix containing 80 wt% low-density polyethylene and 20 wt% high-density polyethylene with and without anhydride modified polyethylene (PE-MA) as the compatibilizer using a corotating twin-screw extruder. In this study, the effect of nanoclay and compatibilizer on the structure and dielectric response of PE/clay nanocomposites has been investigated. The microstructure of PE/clay nanocomposites was characterized using wide-angle X-ray diffraction (WAXD) and a scanning electron microscope (SEM). Thermal properties were examined using differential scanning calorimetry (DSC). The dielectric response of neat PE was compared with that of PE/clay nanocomposite with and without the compatibilizer. The XRD and SEM results showed that the PE/O-MMT nanocomposite with the PE-MA compatibilizer was better dispersed. In the nanocomposite materials, two relaxation modes are detected in the dielectric losses. The first relaxation is due to a Maxwell-Wagner-Sillars interfacial polarization, and the second relaxation can be related to dipolar polarization. A relationship between the degree of dispersion and the relaxation rate fmax of Maxwell-Wagner-Sillars was found and discussed.
| Type de document: | Article publié dans une revue, révisé par les pairs |
|---|---|
| Professeur: | Professeur David, Éric Ngô, Anh Dung |
| Affiliation: | Génie mécanique |
| Date de dépôt: | 12 déc. 2013 20:09 |
| Dernière modification: | 15 mars 2019 14:57 |
| URI: | https://espace2.etsmtl.ca/id/eprint/6322 |
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