Electrical characterisation of multi-walled carbon nanotube/polydimethylsiloxane using improved facile dispersion technique

The growth of polymer composite in technological advancement has contributed to the development of electrocardiogram (ECG) electrode, which gives better wearable conformality on human skin. This gives a promising alternative to Multi-Walled Carbon Nanotube (MWCNT) and polydimethylsiloxane (PDMS) due...

Full description

Saved in:

Bibliographic Details
Main Author:	Mohd. Zambri, Izzaty
Format:	Thesis
Language:	English
Published:	2021
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/102289/1/IzzatyMohdZambriMSKE2021.pdf.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-utm-ep.102289
record_format	uketd_dc
spelling	my-utm-ep.1022892023-08-17T00:34:32Z Electrical characterisation of multi-walled carbon nanotube/polydimethylsiloxane using improved facile dispersion technique 2021 Mohd. Zambri, Izzaty TK Electrical engineering. Electronics Nuclear engineering The growth of polymer composite in technological advancement has contributed to the development of electrocardiogram (ECG) electrode, which gives better wearable conformality on human skin. This gives a promising alternative to Multi-Walled Carbon Nanotube (MWCNT) and polydimethylsiloxane (PDMS) due to its low cost, ease of manufacturing and flexibility. However, with the high aspect ratio and strong Van der Waals interaction forces, MWCNT easily agglomerates, and bundling to each other. An effective dispersion technique of MWCNT/PDMS composite is essential to enhance the electrical conductivity by controlling MWCNT content and maintaining electrode flexibility. Thus, this study disperses the MWCNT/PDMS composite using a solution mixing method: sonication process and mechanical stirring. The MWCNT is dispersed using toluene solvent to achieve uniform dispersion, where the MWCNT content varies from 2 wt% to 10 wt% in PDMS matrix. As a result, the MWCNT/PDMS composite conductivity is in the range of 0.30 × 10-9 S/cm to 6.14 × 10-6 S/cm. At 4 wt%, the MWCNT/PDMS composite reached the percolation threshold region. The fabricated polymer composite was further characterised in Raman spectroscopy and the measurement shows vibration peaks in the D-band at 1349 cm-1 and G-band at 1585 cm-1. This proves the dispersion of MWCNT in PDMS. In addition, the intensity of the D-band and G-band, ID/IG decreases when the MWCNT/PDMS concentration increases, indicating less defect of MWCNT during the sonication process. These findings show that the MWCNT/PDMS has the potential as an excellent polymer composite electrode. 2021 Thesis http://eprints.utm.my/id/eprint/102289/ http://eprints.utm.my/id/eprint/102289/1/IzzatyMohdZambriMSKE2021.pdf.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:149297 masters Universiti Teknologi Malaysia Faculty of Engineering - School of Electrical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Mohd. Zambri, Izzaty Electrical characterisation of multi-walled carbon nanotube/polydimethylsiloxane using improved facile dispersion technique
description	The growth of polymer composite in technological advancement has contributed to the development of electrocardiogram (ECG) electrode, which gives better wearable conformality on human skin. This gives a promising alternative to Multi-Walled Carbon Nanotube (MWCNT) and polydimethylsiloxane (PDMS) due to its low cost, ease of manufacturing and flexibility. However, with the high aspect ratio and strong Van der Waals interaction forces, MWCNT easily agglomerates, and bundling to each other. An effective dispersion technique of MWCNT/PDMS composite is essential to enhance the electrical conductivity by controlling MWCNT content and maintaining electrode flexibility. Thus, this study disperses the MWCNT/PDMS composite using a solution mixing method: sonication process and mechanical stirring. The MWCNT is dispersed using toluene solvent to achieve uniform dispersion, where the MWCNT content varies from 2 wt% to 10 wt% in PDMS matrix. As a result, the MWCNT/PDMS composite conductivity is in the range of 0.30 × 10-9 S/cm to 6.14 × 10-6 S/cm. At 4 wt%, the MWCNT/PDMS composite reached the percolation threshold region. The fabricated polymer composite was further characterised in Raman spectroscopy and the measurement shows vibration peaks in the D-band at 1349 cm-1 and G-band at 1585 cm-1. This proves the dispersion of MWCNT in PDMS. In addition, the intensity of the D-band and G-band, ID/IG decreases when the MWCNT/PDMS concentration increases, indicating less defect of MWCNT during the sonication process. These findings show that the MWCNT/PDMS has the potential as an excellent polymer composite electrode.
format	Thesis
qualification_level	Master's degree
author	Mohd. Zambri, Izzaty
author_facet	Mohd. Zambri, Izzaty
author_sort	Mohd. Zambri, Izzaty
title	Electrical characterisation of multi-walled carbon nanotube/polydimethylsiloxane using improved facile dispersion technique
title_short	Electrical characterisation of multi-walled carbon nanotube/polydimethylsiloxane using improved facile dispersion technique
title_full	Electrical characterisation of multi-walled carbon nanotube/polydimethylsiloxane using improved facile dispersion technique
title_fullStr	Electrical characterisation of multi-walled carbon nanotube/polydimethylsiloxane using improved facile dispersion technique
title_full_unstemmed	Electrical characterisation of multi-walled carbon nanotube/polydimethylsiloxane using improved facile dispersion technique
title_sort	electrical characterisation of multi-walled carbon nanotube/polydimethylsiloxane using improved facile dispersion technique
granting_institution	Universiti Teknologi Malaysia
granting_department	Faculty of Engineering - School of Electrical Engineering
publishDate	2021
url	http://eprints.utm.my/id/eprint/102289/1/IzzatyMohdZambriMSKE2021.pdf.pdf
_version_	1776100888373362688

Electrical characterisation of multi-walled carbon nanotube/polydimethylsiloxane using improved facile dispersion technique

Similar Items