Title :

Impact of carbon nanotube prelocalization on the ultra-low electrical percolation threshold and on the mechanical behavior of sintered UHMWPE-based nanocomposites

Author(s) :

Deplancke, Tiana [Auteur]
Matériaux, ingénierie et science [Villeurbanne] [MATEIS]
Lame, Olivier [Auteur]
Matériaux, ingénierie et science [Villeurbanne] [MATEIS]
Barrau, Sophie [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Ravi, Kesavan [Auteur]
Matériaux, ingénierie et science [Villeurbanne] [MATEIS]
Dalmas, Florent [Auteur]
Matériaux, ingénierie et science [Villeurbanne] [MATEIS]

Journal title :

Polymer

Volume number :

111

Pages :

204-213

Publication date :

2017

HAL domain(s) :

Sciences de l'ingénieur [physics]/Matériaux
Sciences de l'ingénieur [physics]/Génie des procédés
Chimie/Matériaux
Chimie/Polymères

English abstract : [en]

Nascent powder particles of Ultra High Molecular Weight Polyethylene have been covered by multi-walled carbon nanotubes and then processed by means of sintering. The prelocalization of carbon nanotubes in the interfacial ...
Show more >Nascent powder particles of Ultra High Molecular Weight Polyethylene have been covered by multi-walled carbon nanotubes and then processed by means of sintering. The prelocalization of carbon nanotubes in the interfacial region between powder particles of UHMWPE allowed reaching an electrical percolation threshold as low as 0.04 wt%. It is also a possible way to reinforce specifically the interfacial regions with a very small amount of fillers. Indeed, the nucleation effect of the nanotubes is very strong on the strain-induced crystallization in the melting state of the composite. The tensile experiments above the melting point allowed by the extremely broad rubbery plateau of the UHMWPE show a significant increase in strain-hardening due to the addition of CNTs from 0.02 wt%. In the solid state the elastic properties, such as yield stress, and the crystallinity can also be increased for higher CNT concentrations despite the presence of aggregates which reduce the elongation at break.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
ENSCL
CNRS
INRA

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Ingénierie des Systèmes Polymères

Submission date :

2019-05-16T17:19:48Z
2020-02-27T14:44:06Z
2020-02-28T14:43:18Z