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Volume 13
Issue 11
10.3390/ma13112431
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Article

Strain-Sensing Properties of Multi-Walled Carbon Nanotube/Polydimethylsiloxane Composites with Different Aspect Ratio and Filler Contents

by
Oh-Nyoung Hur
,
Ji-Hwan Ha
and
Sung-Hoon Park
*
Department of Mechanical Engineering, Soongsil University, 369 Sangdo-ro, Dongjak-Gu, Seoul 06978, Korea
*
Author to whom correspondence should be addressed.
Materials 2020, 13(11), 2431; https://doi.org/10.3390/ma13112431
Submission received: 30 April 2020 / Revised: 18 May 2020 / Accepted: 19 May 2020 / Published: 26 May 2020
(This article belongs to the Special Issue Advanced Materials for Energy and Environmental Applications)
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Abstract

For filler composite systems used in strain sensor applications, piezoresistive effect, strain hysteresis, and repeatability are critical factors, which have to be clearly evaluated and understood. To investigate the effects of the aspect ratio and content of a multi-walled carbon nanotube (MWCNT) on the strain sensor properties of the composite, MWCNT/Polydimethylsiloxane (PDMS) composites with varying filler contents and aspect ratios were fabricated. In order to uniformly disperse MWCNTs on the polymer matrix, we used a three-roll milling method to generate high shear force for de-bundling MWCNTs. Mechanical and electrical properties of the MWCNT composites were evaluated for each case. In addition, through the cyclic stretching test, we optimized the strain-sensing properties of the MWCNT composites by considering their piezoresistive effects and strain hysteresis.
Keywords: carbon nanotube; aspect ratio; polymer composite; strain sensor; hysteresis carbon nanotube; aspect ratio; polymer composite; strain sensor; hysteresis

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MDPI and ACS Style

Hur, O.-N.; Ha, J.-H.; Park, S.-H. Strain-Sensing Properties of Multi-Walled Carbon Nanotube/Polydimethylsiloxane Composites with Different Aspect Ratio and Filler Contents. Materials 2020, 13, 2431. https://doi.org/10.3390/ma13112431

AMA Style

Hur O-N, Ha J-H, Park S-H. Strain-Sensing Properties of Multi-Walled Carbon Nanotube/Polydimethylsiloxane Composites with Different Aspect Ratio and Filler Contents. Materials. 2020; 13(11):2431. https://doi.org/10.3390/ma13112431

Chicago/Turabian Style

Hur, Oh-Nyoung, Ji-Hwan Ha, and Sung-Hoon Park. 2020. "Strain-Sensing Properties of Multi-Walled Carbon Nanotube/Polydimethylsiloxane Composites with Different Aspect Ratio and Filler Contents" Materials 13, no. 11: 2431. https://doi.org/10.3390/ma13112431

APA Style

Hur, O.-N., Ha, J.-H., & Park, S.-H. (2020). Strain-Sensing Properties of Multi-Walled Carbon Nanotube/Polydimethylsiloxane Composites with Different Aspect Ratio and Filler Contents. Materials, 13(11), 2431. https://doi.org/10.3390/ma13112431

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