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Graphene/PVA buckypaper for strain sensing application

Strain sensors in the form of buckypaper (BP) infiltrated with various polymers are considered a viable option for strain sensor applications such as structural health monitoring and human motion detection. Graphene has outstanding properties in terms of strength, heat and current conduction, optics...

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Main Authors: Mehmood, Ahsan, Mubarak, N. M., Khalid, Mohammad, Jagadish, Priyanka, Walvekar, Rashmi, Abdullah, E. C.
Format: Article
Language:English
Published: Nature Research 2020
Subjects:
T Technology (General)
Online Access:http://eprints.utm.my/id/eprint/90535/1/EzzatChanAbdullah2020_GraphenePVABuckypaperforStrainSensingApplication.pdf
http://eprints.utm.my/id/eprint/90535/
http://dx.doi.org/10.1038/s41598-020-77139-2
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spelling my.utm.905352021-04-30T14:47:50Z http://eprints.utm.my/id/eprint/90535/ Graphene/PVA buckypaper for strain sensing application Mehmood, Ahsan Mubarak, N. M. Khalid, Mohammad Jagadish, Priyanka Walvekar, Rashmi Abdullah, E. C. T Technology (General) Strain sensors in the form of buckypaper (BP) infiltrated with various polymers are considered a viable option for strain sensor applications such as structural health monitoring and human motion detection. Graphene has outstanding properties in terms of strength, heat and current conduction, optics, and many more. However, graphene in the form of BP has not been considered earlier for strain sensing applications. In this work, graphene-based BP infiltrated with polyvinyl alcohol (PVA) was synthesized by vacuum filtration technique and polymer intercalation. First, Graphene oxide (GO) was prepared via treatment with sulphuric acid and nitric acid. Whereas, to obtain high-quality BP, GO was sonicated in ethanol for 20 min with sonication intensity of 60%. FTIR studies confirmed the oxygenated groups on the surface of GO while the dispersion characteristics were validated using zeta potential analysis. The nanocomposite was synthesized by varying BP and PVA concentrations. Mechanical and electrical properties were measured using a computerized tensile testing machine, two probe method, and hall effect, respectively. The electrical conducting properties of the nanocomposites decreased with increasing PVA content; likewise, electron mobility also decreased while electrical resistance increased. The optimization study reports the highest mechanical properties such as tensile strength, Young’s Modulus, and elongation at break of 200.55 MPa, 6.59 GPa, and 6.79%, respectively. Finally, electrochemical testing in a strain range of ε ~ 4% also testifies superior strain sensing properties of 60 wt% graphene BP/PVA with a demonstration of repeatability, accuracy, and preciseness for five loading and unloading cycles with a gauge factor of 1.33. Thus, results prove the usefulness of the nanocomposite for commercial and industrial applications. Nature Research 2020-12 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/90535/1/EzzatChanAbdullah2020_GraphenePVABuckypaperforStrainSensingApplication.pdf Mehmood, Ahsan and Mubarak, N. M. and Khalid, Mohammad and Jagadish, Priyanka and Walvekar, Rashmi and Abdullah, E. C. (2020) Graphene/PVA buckypaper for strain sensing application. Scientific Reports, 10 (1). p. 20106. ISSN 2045-2322 http://dx.doi.org/10.1038/s41598-020-77139-2
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic T Technology (General)
spellingShingle T Technology (General)
Mehmood, Ahsan
Mubarak, N. M.
Khalid, Mohammad
Jagadish, Priyanka
Walvekar, Rashmi
Abdullah, E. C.
Graphene/PVA buckypaper for strain sensing application
description Strain sensors in the form of buckypaper (BP) infiltrated with various polymers are considered a viable option for strain sensor applications such as structural health monitoring and human motion detection. Graphene has outstanding properties in terms of strength, heat and current conduction, optics, and many more. However, graphene in the form of BP has not been considered earlier for strain sensing applications. In this work, graphene-based BP infiltrated with polyvinyl alcohol (PVA) was synthesized by vacuum filtration technique and polymer intercalation. First, Graphene oxide (GO) was prepared via treatment with sulphuric acid and nitric acid. Whereas, to obtain high-quality BP, GO was sonicated in ethanol for 20 min with sonication intensity of 60%. FTIR studies confirmed the oxygenated groups on the surface of GO while the dispersion characteristics were validated using zeta potential analysis. The nanocomposite was synthesized by varying BP and PVA concentrations. Mechanical and electrical properties were measured using a computerized tensile testing machine, two probe method, and hall effect, respectively. The electrical conducting properties of the nanocomposites decreased with increasing PVA content; likewise, electron mobility also decreased while electrical resistance increased. The optimization study reports the highest mechanical properties such as tensile strength, Young’s Modulus, and elongation at break of 200.55 MPa, 6.59 GPa, and 6.79%, respectively. Finally, electrochemical testing in a strain range of ε ~ 4% also testifies superior strain sensing properties of 60 wt% graphene BP/PVA with a demonstration of repeatability, accuracy, and preciseness for five loading and unloading cycles with a gauge factor of 1.33. Thus, results prove the usefulness of the nanocomposite for commercial and industrial applications.
format Article
author Mehmood, Ahsan
Mubarak, N. M.
Khalid, Mohammad
Jagadish, Priyanka
Walvekar, Rashmi
Abdullah, E. C.
author_facet Mehmood, Ahsan
Mubarak, N. M.
Khalid, Mohammad
Jagadish, Priyanka
Walvekar, Rashmi
Abdullah, E. C.
author_sort Mehmood, Ahsan
title Graphene/PVA buckypaper for strain sensing application
title_short Graphene/PVA buckypaper for strain sensing application
title_full Graphene/PVA buckypaper for strain sensing application
title_fullStr Graphene/PVA buckypaper for strain sensing application
title_full_unstemmed Graphene/PVA buckypaper for strain sensing application
title_sort graphene/pva buckypaper for strain sensing application
publisher Nature Research
publishDate 2020
url http://eprints.utm.my/id/eprint/90535/1/EzzatChanAbdullah2020_GraphenePVABuckypaperforStrainSensingApplication.pdf
http://eprints.utm.my/id/eprint/90535/
http://dx.doi.org/10.1038/s41598-020-77139-2
_version_ 1698696949939568640
score 13.211869

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