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Development of pseudo-surface modification method for graphene

In recent years, it cannot be denied that it is more difficult to imagine spending a day without the help of electronic devices in modern technologies. However, these devices consume power and generate intense heat, and caused low efficiency and performance. Therefore, thermally conductive polymer c...

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Main Authors: Sim, Siew Teng, Andou, Yoshito, Abdul Bashid, Hamra Assyaima, Lim, Hong Ngee
Format: Conference or Workshop Item
Language:English
Published: 2017
Online Access:http://psasir.upm.edu.my/id/eprint/64400/1/MST%20oral%20111117%204.pdf
http://psasir.upm.edu.my/id/eprint/64400/
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spelling my.upm.eprints.644002018-07-05T09:25:06Z http://psasir.upm.edu.my/id/eprint/64400/ Development of pseudo-surface modification method for graphene Sim, Siew Teng Andou, Yoshito Abdul Bashid, Hamra Assyaima Lim, Hong Ngee In recent years, it cannot be denied that it is more difficult to imagine spending a day without the help of electronic devices in modern technologies. However, these devices consume power and generate intense heat, and caused low efficiency and performance. Therefore, thermally conductive polymer composites for electronic devices is generating a lot of interest in various fields. Recently, graphene has attracted enormous attention owing to its remarkable properties. It is flexible, lightweight, ultra-strong, and highly conductive in both electrically and thermally. However, due to high surface area, van der Waals and π- π interactions, graphene sheets tend to aggregate and cause dispersion problem in solvents, resulting limit applications. Herein, pseudo-surface modification is proposed, which is a non-covalent modification method, which can maximally preserve graphene’s natural structure and its inherent properties. In this study, this facile and cost-efficient way was used to prepare functionalized GO (fGO), which involving aromatic hydrocarbons in polymerization; 2-naphthalene thiol (2-NT) acted as chain transfer agent in radical polymerization with MMA, while 1-naphthalene methanol (1-NM) acted as aromatic agent in ring opening polymerization with ε-CL. SEC profiles and NMR spectra indicated the attachment of aromatic agent on polymer chains. Both fGO showed good dispersion in more solvents compared to GO. In term of thermal conductivity, 0.35wt% fGO-PCL showed 43% improvement compared to PCL with 1-NM. While, 5wt% fGO-PMMA showed 25% improvement compared to PMMA with 2-NT. In summary, proposed pseudo-surface modification able to synthesis fGO with better dispersion and thermal conductivity for applications in electronic devices. 2017 Conference or Workshop Item PeerReviewed text en http://psasir.upm.edu.my/id/eprint/64400/1/MST%20oral%20111117%204.pdf Sim, Siew Teng and Andou, Yoshito and Abdul Bashid, Hamra Assyaima and Lim, Hong Ngee (2017) Development of pseudo-surface modification method for graphene. In: 5th International Symposium on Applied Engineering and Sciences (SAES2017), 14-15 Nov. 2017, Universiti Putra Malaysia. (p. 4).
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description In recent years, it cannot be denied that it is more difficult to imagine spending a day without the help of electronic devices in modern technologies. However, these devices consume power and generate intense heat, and caused low efficiency and performance. Therefore, thermally conductive polymer composites for electronic devices is generating a lot of interest in various fields. Recently, graphene has attracted enormous attention owing to its remarkable properties. It is flexible, lightweight, ultra-strong, and highly conductive in both electrically and thermally. However, due to high surface area, van der Waals and π- π interactions, graphene sheets tend to aggregate and cause dispersion problem in solvents, resulting limit applications. Herein, pseudo-surface modification is proposed, which is a non-covalent modification method, which can maximally preserve graphene’s natural structure and its inherent properties. In this study, this facile and cost-efficient way was used to prepare functionalized GO (fGO), which involving aromatic hydrocarbons in polymerization; 2-naphthalene thiol (2-NT) acted as chain transfer agent in radical polymerization with MMA, while 1-naphthalene methanol (1-NM) acted as aromatic agent in ring opening polymerization with ε-CL. SEC profiles and NMR spectra indicated the attachment of aromatic agent on polymer chains. Both fGO showed good dispersion in more solvents compared to GO. In term of thermal conductivity, 0.35wt% fGO-PCL showed 43% improvement compared to PCL with 1-NM. While, 5wt% fGO-PMMA showed 25% improvement compared to PMMA with 2-NT. In summary, proposed pseudo-surface modification able to synthesis fGO with better dispersion and thermal conductivity for applications in electronic devices.
format Conference or Workshop Item
author Sim, Siew Teng
Andou, Yoshito
Abdul Bashid, Hamra Assyaima
Lim, Hong Ngee
spellingShingle Sim, Siew Teng
Andou, Yoshito
Abdul Bashid, Hamra Assyaima
Lim, Hong Ngee
Development of pseudo-surface modification method for graphene
author_facet Sim, Siew Teng
Andou, Yoshito
Abdul Bashid, Hamra Assyaima
Lim, Hong Ngee
author_sort Sim, Siew Teng
title Development of pseudo-surface modification method for graphene
title_short Development of pseudo-surface modification method for graphene
title_full Development of pseudo-surface modification method for graphene
title_fullStr Development of pseudo-surface modification method for graphene
title_full_unstemmed Development of pseudo-surface modification method for graphene
title_sort development of pseudo-surface modification method for graphene
publishDate 2017
url http://psasir.upm.edu.my/id/eprint/64400/1/MST%20oral%20111117%204.pdf
http://psasir.upm.edu.my/id/eprint/64400/
_version_ 1643838012026519552
score 13.211869

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