Strugova, Daria, Ferreira Junior, José Carlos, David, Éric et Demarquette, Nicole R..
2021.
« Ultra-low percolation threshold induced by thermal treatments in co-continuous blend-based PP/PS/MWCNTS nanocomposites ».
Nanomaterials, vol. 11, nº 6.
Compte des citations dans Scopus : 15.
Prévisualisation |
PDF
Demarquette-N-2021-22935.pdf - Version publiée Licence d'utilisation : Creative Commons CC BY. Télécharger (6MB) | Prévisualisation |
Résumé
The effect of the crystallization of polypropylene (PP) forming an immiscible polymer blend with polystyrene (PS) containing conductive multi-wall carbon nanotubes (MWCNTs) on its electrical conductivity and electrical percolation threshold (PT) was investigated in this work. PP/PS/MWCNTs composites with a co-continuous morphology and a concentration of MWCNTs ranging from 0 to 2 wt.% were obtained. The PT was greatly reduced by a two-step approach. First, a 50% reduction in the PT was achieved by using the effect of double percolation in the blend system compared to PP/MWCNTs. Second, with the additional thermal treatments, referred to as slow-cooling treatment (with the cooling rate 0.5 °C/min), and isothermal treatment (at 135 °C for 15 min), ultra-low PT values were achieved for the PP/PS/MWCNTs system. A 0.06 wt.% of MWCNTs was attained upon the use of the slow-cooling treatment and 0.08 wt.% of MWCNTs upon the isothermal treatment. This reduction is attributed to PP crystals’ volume exclusion, with no alteration in the blend morphology.
| Type de document: | Article publié dans une revue, révisé par les pairs |
|---|---|
| Professeur: | Professeur David, Éric Demarquette, Nicole R. |
| Affiliation: | Génie mécanique, Génie mécanique |
| Date de dépôt: | 28 juill. 2021 20:43 |
| Dernière modification: | 17 déc. 2021 15:58 |
| URI: | https://espace2.etsmtl.ca/id/eprint/22935 |
Actions (Authentification requise)
 |
Dernière vérification avant le dépôt |