Effect of carbon nanotube length on the piezoresistive response of poly (methyl methacrylate) nanocomposites

F. Avilés; A. I. Oliva; G. Ventura; A. May-Pat; A. I. Oliva-Avilés

doi:10.1016/j.eurpolymj.2018.12.002

Effect of carbon nanotube length on the piezoresistive response of poly (methyl methacrylate) nanocomposites

F. Avilés, A. I. Oliva, G. Ventura, A. May-Pat, A. I. Oliva-Avilés

Anahuac Mayab University

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

Multiwall carbon nanotubes (MWCNTs) were systematically fragmented using high density ultrasonic energy and used as fillers of a poly (methyl methacrylate) matrix (PMMA). MWCNT fragmentation was confirmed by scanning electron microscopy and atomic force microscopy. Dedicated MWCNT length measurements yielded a log-normal statistical distribution, with mean value of 1.33 μm for the as-received MWCNTs and 0.66 μm for the fragmented MWCNTs. Higher electrical percolation threshold and lower electrical conductivity were obtained for MWCNT/PMMA composites (0.01–1 wt.% MWCNT concentration) using the fragmented MWCNTs. Higher electro-mechanical (piezoresistive) sensitivity under tensile tests was measured for PMMA nanocomposites with fragmented MWCNTs, which was explained by a competition of mechanisms related to the MWCNT length.

Original language	English
Pages (from-to)	394-402
Number of pages	9
Journal	European Polymer Journal
Volume	110
DOIs	https://doi.org/10.1016/j.eurpolymj.2018.12.002
State	Published - 1 Jan 2019

Keywords

Carbon nanotubes
Nanocomposites
Piezoresistivity
PMMA
Ultrasonic energy

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10.1016/j.eurpolymj.2018.12.002

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title = "Effect of carbon nanotube length on the piezoresistive response of poly (methyl methacrylate) nanocomposites",

abstract = "Multiwall carbon nanotubes (MWCNTs) were systematically fragmented using high density ultrasonic energy and used as fillers of a poly (methyl methacrylate) matrix (PMMA). MWCNT fragmentation was confirmed by scanning electron microscopy and atomic force microscopy. Dedicated MWCNT length measurements yielded a log-normal statistical distribution, with mean value of 1.33 μm for the as-received MWCNTs and 0.66 μm for the fragmented MWCNTs. Higher electrical percolation threshold and lower electrical conductivity were obtained for MWCNT/PMMA composites (0.01–1 wt.% MWCNT concentration) using the fragmented MWCNTs. Higher electro-mechanical (piezoresistive) sensitivity under tensile tests was measured for PMMA nanocomposites with fragmented MWCNTs, which was explained by a competition of mechanisms related to the MWCNT length.",

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author = "F. Avil{\'e}s and Oliva, {A. I.} and G. Ventura and A. May-Pat and Oliva-Avil{\'e}s, {A. I.}",

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AU - Avilés, F.

AU - Oliva, A. I.

AU - Ventura, G.

AU - May-Pat, A.

AU - Oliva-Avilés, A. I.

PY - 2019/1/1

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AB - Multiwall carbon nanotubes (MWCNTs) were systematically fragmented using high density ultrasonic energy and used as fillers of a poly (methyl methacrylate) matrix (PMMA). MWCNT fragmentation was confirmed by scanning electron microscopy and atomic force microscopy. Dedicated MWCNT length measurements yielded a log-normal statistical distribution, with mean value of 1.33 μm for the as-received MWCNTs and 0.66 μm for the fragmented MWCNTs. Higher electrical percolation threshold and lower electrical conductivity were obtained for MWCNT/PMMA composites (0.01–1 wt.% MWCNT concentration) using the fragmented MWCNTs. Higher electro-mechanical (piezoresistive) sensitivity under tensile tests was measured for PMMA nanocomposites with fragmented MWCNTs, which was explained by a competition of mechanisms related to the MWCNT length.

KW - Carbon nanotubes

KW - Nanocomposites

KW - Piezoresistivity

KW - PMMA

KW - Ultrasonic energy

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VL - 110

SP - 394

EP - 402

JO - European Polymer Journal

JF - European Polymer Journal

ER -

Effect of carbon nanotube length on the piezoresistive response of poly (methyl methacrylate) nanocomposites

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Keywords

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