Mechanical and conductive properties of silicone filled graphene electrically conductive adhesive [ECA] / Nurin Aishah Ahmad Omar

The aim is to synthesize a silicone-based graphene electrically conductive adhesive (ECA). Silicone ECA incorporated with graphene as filler, may exhibit mechanical and electrical properties different than other types of ECA. Hence, the objective of the study is to investigate the mechanical and con...

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Main Author:	Ahmad Omar, Nurin Aishah
Format:	Thesis
Language:	English
Published:	2022
Subjects:	Carbon disulfide Graphene Carbon
Online Access:	https://ir.uitm.edu.my/id/eprint/70346/1/70346.pdf
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id	my-uitm-ir.70346
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spelling	my-uitm-ir.703462023-01-30T02:42:37Z Mechanical and conductive properties of silicone filled graphene electrically conductive adhesive [ECA] / Nurin Aishah Ahmad Omar 2022 Ahmad Omar, Nurin Aishah Carbon disulfide. Graphene. Carbon Electrochemistry. Electrolysis The aim is to synthesize a silicone-based graphene electrically conductive adhesive (ECA). Silicone ECA incorporated with graphene as filler, may exhibit mechanical and electrical properties different than other types of ECA. Hence, the objective of the study is to investigate the mechanical and conductive properties of various graphene loading (0%, 3%, 5%, 7%, and 9%) filled silicone. Addition of polyethylene glycol (PEG-600) to graphene for mechanical properties improvement with different loading percentage was done using ultrasonication and magnetic stirring. The curing process was done by oven heating at 100°C for 4 hours. Characterization was done using tensile test and FTIR, while for the electrical properties were done using electrochemical impedance spectroscopy (EIS) and Tafel plot. For EIS, Nyquist plot was used to determine the conductivity of the samples with result of optimum value at 9% (4.87x10-06 S/cm). It was found that the conductivity is dependent on the graphene loading percentage due to its inherent electrical conductivity properties which then resulted in high polarization resistance (10.9690x109 Ω at 9% GNP) when tested using Tafel plot. The electron in graphene has a long mean free route, producing a continuous channel that facilitates free electron movement for electrical conduction without interfering with electron-electron interaction or disorder. As a result of the electrolyte's susceptibility to be drawn to the composite and oxidised, the adhesive has a longer shelf life. With an optimum value obtained was at 7%, the tensile strength obtained was 0.305 MPa and the Young’s modulus was 146.523 MPa, before the value decreases as graphene loading increased due to the inherent properties of graphene that have a strong covalent bond between its carbon atoms. When the material's surface contact rises, the chain mobility of silicone-filled GNP decreases, which can also improve the composite's stiffness. The FTIR testing was done to confirm the presence and dispersion of graphene in the silicone and PEG-600. The emergence of -OH, CH, C=C, and C=O functional groups proves that the graphene was successfully introduced into the polymer with the -OH peak migrated to a higher strength at optimum value. 2022 Thesis https://ir.uitm.edu.my/id/eprint/70346/ https://ir.uitm.edu.my/id/eprint/70346/1/70346.pdf text en public degree Universiti Teknologi MARA, Perlis Faculty of Applied Sciences Ahmad, Zuliahani
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Ahmad, Zuliahani
topic	Carbon disulfide Graphene Carbon Carbon disulfide Graphene Carbon
spellingShingle	Carbon disulfide Graphene Carbon Carbon disulfide Graphene Carbon Ahmad Omar, Nurin Aishah Mechanical and conductive properties of silicone filled graphene electrically conductive adhesive [ECA] / Nurin Aishah Ahmad Omar
description	The aim is to synthesize a silicone-based graphene electrically conductive adhesive (ECA). Silicone ECA incorporated with graphene as filler, may exhibit mechanical and electrical properties different than other types of ECA. Hence, the objective of the study is to investigate the mechanical and conductive properties of various graphene loading (0%, 3%, 5%, 7%, and 9%) filled silicone. Addition of polyethylene glycol (PEG-600) to graphene for mechanical properties improvement with different loading percentage was done using ultrasonication and magnetic stirring. The curing process was done by oven heating at 100°C for 4 hours. Characterization was done using tensile test and FTIR, while for the electrical properties were done using electrochemical impedance spectroscopy (EIS) and Tafel plot. For EIS, Nyquist plot was used to determine the conductivity of the samples with result of optimum value at 9% (4.87x10-06 S/cm). It was found that the conductivity is dependent on the graphene loading percentage due to its inherent electrical conductivity properties which then resulted in high polarization resistance (10.9690x109 Ω at 9% GNP) when tested using Tafel plot. The electron in graphene has a long mean free route, producing a continuous channel that facilitates free electron movement for electrical conduction without interfering with electron-electron interaction or disorder. As a result of the electrolyte's susceptibility to be drawn to the composite and oxidised, the adhesive has a longer shelf life. With an optimum value obtained was at 7%, the tensile strength obtained was 0.305 MPa and the Young’s modulus was 146.523 MPa, before the value decreases as graphene loading increased due to the inherent properties of graphene that have a strong covalent bond between its carbon atoms. When the material's surface contact rises, the chain mobility of silicone-filled GNP decreases, which can also improve the composite's stiffness. The FTIR testing was done to confirm the presence and dispersion of graphene in the silicone and PEG-600. The emergence of -OH, CH, C=C, and C=O functional groups proves that the graphene was successfully introduced into the polymer with the -OH peak migrated to a higher strength at optimum value.
format	Thesis
qualification_level	Bachelor degree
author	Ahmad Omar, Nurin Aishah
author_facet	Ahmad Omar, Nurin Aishah
author_sort	Ahmad Omar, Nurin Aishah
title	Mechanical and conductive properties of silicone filled graphene electrically conductive adhesive [ECA] / Nurin Aishah Ahmad Omar
title_short	Mechanical and conductive properties of silicone filled graphene electrically conductive adhesive [ECA] / Nurin Aishah Ahmad Omar
title_full	Mechanical and conductive properties of silicone filled graphene electrically conductive adhesive [ECA] / Nurin Aishah Ahmad Omar
title_fullStr	Mechanical and conductive properties of silicone filled graphene electrically conductive adhesive [ECA] / Nurin Aishah Ahmad Omar
title_full_unstemmed	Mechanical and conductive properties of silicone filled graphene electrically conductive adhesive [ECA] / Nurin Aishah Ahmad Omar
title_sort	mechanical and conductive properties of silicone filled graphene electrically conductive adhesive [eca] / nurin aishah ahmad omar
granting_institution	Universiti Teknologi MARA, Perlis
granting_department	Faculty of Applied Sciences
publishDate	2022
url	https://ir.uitm.edu.my/id/eprint/70346/1/70346.pdf
_version_	1783735936029294592

Mechanical and conductive properties of silicone filled graphene electrically conductive adhesive [ECA] / Nurin Aishah Ahmad Omar

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