Low filled conductive P(VDF-TrFE) composites: Influence of silver particles aspect ratio on percolation threshold from spheres to nanowires

Antoine Lonjon 1 Philippe Demont 1 Eric Dantras 1 Colette Lacabanne 1
1 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux
Abstract : Polymer composites filled with silver nanowires enable the highest value of electrical conductivity known up to now in the case of conductive nanoparticle dispersion with a percolation threshold less than 1 vol%. Silver nanowires with high aspect ratio were elaborated by two types of synthesis: electrochemical deposition in a template and polyol synthesis. For the first time the influence of each kind of nanowires in composites was studied and compared to spherical nanoparticles as reference. The value of percolation threshold and conductivity level above the percolation threshold were measured and compared. These silver nanowires were introduced into poly(vinylidenedifluoride-trifluoroethylene) in comparison to spherical silver nanoparticles. The preparation method modified the effective aspect ratio of nanowires. The low percolation threshold and the microscopy observations confirmed the good dispersion of nanowires in composites. The lowest percolation threshold was determined in the case of the polyol synthesis nanowires (0.63 vol%) in comparison with electrochemical deposited nanowires (2.2 vol%). The level of conductivity above the percolation threshold obtained with each kind of particles is in the same range near 100 S.m− 1. The value of electrical conductivity obtained above the percolation threshold is unusual at this low content of conductive filler and is observed for the first time in a conductive polymer composite.
Keywords : Nanowires Conductive polymer composites Aspect ratio Percolation threshold
Document type :
Journal articles
Complete list of metadatas

Cited literature [6 references]  Display  Hide  Download
https://hal.archives-ouvertes.fr/hal-00864886
Contributor : Open Archive Toulouse Archive Ouverte (oatao) <>
Submitted on : Monday, September 23, 2013 - 2:30:30 PM
Last modification on : Thursday, October 24, 2019 - 11:38:03 AM
Long-term archiving on: Tuesday, December 24, 2013 - 4:31:54 AM

File

Lonjon_8735.pdf
Files produced by the author(s)

Identifiers

Collections

CNRS | INC-CNRS | UNIV-TLSE3

Citation

Antoine Lonjon, Philippe Demont, Eric Dantras, Colette Lacabanne. Low filled conductive P(VDF-TrFE) composites: Influence of silver particles aspect ratio on percolation threshold from spheres to nanowires. Journal of Non-Crystalline Solids, Elsevier, 2012, vol. 358, pp. 3074-3078. ⟨10.1016/j.jnoncrysol.2012.09.006⟩. ⟨hal-00864886⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

240

Files downloads

351

CONTACT

scd.ao@univ-tlse3.fr