Influence of carbon nanotube clustering on the electrical conductivity of polymer composite films

By J. Aguilar, J. R. Bautista‐Quijano, Francis Avilés. 2010

196 citations recorded by the source corpus.

Electrical conductivity of 150-200 μm thick polysulfone films loaded with 0.05-0.75% w/w multiwall carbon nanotubes was systematically investigated for two types of dispersion states, uniformly dispersed and agglomerated at the micro-scale. The percolation threshold was found at 0.11% and 0.068% w/w for the uniformly dispersed and agglomerated films, respectively. Overall, the conductivity of the films with agglomerated nanotubes was higher than that of the uni- formly dispersed ones, with marked differences of 2 to 4 orders of magnitude for carbon nanotubes loadings in the upper vicinity of the percolation threshold (0.1-0.3% w/w). The increased conductivity of the agglomerated state is explained by the increased nanotube-to-nanotube contact after the percolating network has formed, which facilitates electron transfer.

Subfields: Biomedical Engineering, Materials Chemistry, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/90648dfa8fa61348a4c07afd77dfdc8658d6a781

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The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Biomedical Engineering

1. Francis Avilés
2. E. Tkalya
3. A. Mora
4. M. Ghislandi
5. Shanmugam Kumar
6. P. Verma
7. C. Koning

In Materials Chemistry

1. Francis Avilés
2. E. Tkalya
3. A. Mora
4. M. Ghislandi
5. Shanmugam Kumar
6. P. Verma
7. C. Koning

In Polymers and Plastics

1. Francis Avilés
2. A. Mora
3. Shanmugam Kumar
4. P. Verma

Citations in the corpus

• Electrical and piezoresistive properties of multi-walled carbon nanotube/polymer composite films aligned by an electric field (2011, background): “reported herein correspond to samples extracted from the same batch (for identical wt%), since it is known that electrical properties of MWCNT/polymer films are highly dependent on the final dispersion state of the CNTs [31].”
• Electrical conductivity of CNT/polymer composites: 3D printing, measurements and modeling (2020, background): “, compare Figure 2 in [59] with Figure 2a in [15]).”
• The use of surfactants for dispersing carbon nanotubes and graphene to make conductive nanocomposites (2012, background): “However, the existence of a certain amount of agglomerates can be a key factor in considerably lowering the value of the percolation threshold and increasing the conductivity [10–13].”