Electrical and mechanical properties of flexible multiwalled carbon nanotube/poly (dimethylsiloxane) based nanocomposite sheets

Viannie, Leema Rose and Banapurmath, N.R. and Soudagar, Manzoore Elahi M. and Nandi, Anilkumar V. and Hossain, Nazia and Shellikeri, Ashwini and Kaulgud, Vinita and Mujtaba, MA and Khan, Sher Afghan and Asif, Mohammad (2021) Electrical and mechanical properties of flexible multiwalled carbon nanotube/poly (dimethylsiloxane) based nanocomposite sheets. Journal of Environmental Chemical Engineering, 9 (6). pp. 1-8. ISSN 2213-3437

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Abstract

In this study, the development of highly flexible polymer nanocomposite sheets using multi-walled carbon nanotube (MWCNT) in a poly (dimethylsiloxane) (PDMS) matrix has been presented. Solution processing technique was employed, and MWCNTs were dispersed in n-hexane, and PDMS is resulting in a homogenous dispersion (between 2 wt% and 10 wt%). Scanning electron micrograph (SEM) images show the distribution of MWCNTs within the PDMS matrix, which form continuous conductive networks resulting in percolation threshold even at 2 wt% filler concentrations. The electrical conductivity of the fabricated nanocomposite sheets was found to be about 1.3–158.2 S/m. Samples with 2 wt% and 4 wt% filler concentrations exhibit excellent temporal stability both in ambient and vacuum conditions, with a near-zero temperature coefficient of resistance. The nanocomposite sheets used for mechanical studies were made as per ASTM D-412-C standards. An optimal filler concentration of 5.58 wt% can be observed with the stiffness of 0.486 MPa, the tensile strength of 0.422 MPa, the electrical conductivity of about 39.5 S/m, and elongation up to 120%. Therefore, this filler concentration is most suited for fabricating flexible strain sensors with good conductivity and temporal stability.

Item Type:	Article (Journal)
Additional Information:	7395/93157
Uncontrolled Keywords:	Carbon nanotubes Nanocomposites Poly(dimethylsiloxane) Flexible sensor Tensile strength Strain sensor
Subjects:	T Technology > TP Chemical technology > TP1080 Polymers, plastics and their manufacture
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User:	Prof. Dr. Sher Afghan Khan
Date Deposited:	20 Oct 2021 12:26
Last Modified:	20 Oct 2021 12:26
URI:	http://irep.iium.edu.my/id/eprint/93157

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