Coaxial carbon@boron nitride nanotube arrays with enhanced thermal stability and compressive mechanical properties

Vertically aligned carbon nanotube (CNT) arrays have aroused considerable interest because of their remarkable mechanical properties. However, the mechanical behaviour of as-synthesized CNT arrays could vary drastically at a macro-scale depending on their morphologies, dimensions and array density,...

Full description

Saved in:
Bibliographic Details
Main Authors: Teo, Edwin Hang Tong, Jing, Lin, Tay, Roland Yingjie, Li, Hongling, Tsang, Siu Hon, Huang, Jingfeng, Tan, Dunlin, Zhang, Bowei, Tok, Alfred Iing Yoong
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2017
Subjects:
Online Access:https://hdl.handle.net/10356/83484
http://hdl.handle.net/10220/43549
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-83484
record_format dspace
spelling sg-ntu-dr.10356-834842020-09-26T22:16:18Z Coaxial carbon@boron nitride nanotube arrays with enhanced thermal stability and compressive mechanical properties Teo, Edwin Hang Tong Jing, Lin Tay, Roland Yingjie Li, Hongling Tsang, Siu Hon Huang, Jingfeng Tan, Dunlin Zhang, Bowei Tok, Alfred Iing Yoong School of Electrical and Electronic Engineering School of Materials Science & Engineering Institute for Sports Research CNRS International NTU THALES Research Alliance Temasek Laboratories Carbon nanotube arrays Boron nitrides Vertically aligned carbon nanotube (CNT) arrays have aroused considerable interest because of their remarkable mechanical properties. However, the mechanical behaviour of as-synthesized CNT arrays could vary drastically at a macro-scale depending on their morphologies, dimensions and array density, which are determined by the synthesis method. Here, we demonstrate a coaxial carbon@boron nitride nanotube (C@BNNT) array with enhanced compressive strength and shape recoverability. CNT arrays are grown using a commercially available thermal chemical vapor deposition (TCVD) technique and an outer BNNT with a wall thickness up to 1.37 nm is introduced by a post-growth TCVD treatment. Importantly, compared to the as-grown CNT arrays which deform almost plastically upon compression, the coaxial C@BNNT arrays exhibit an impressive ∼4-fold increase in compressive strength with nearly full recovery after the first compression cycle at a 50% strain (76% recovery maintained after 10 cycles), as well as a significantly high and persistent energy dissipation ratio (∼60% at a 50% strain after 100 cycles), attributed to the synergistic effect between the CNT and outer BNNT. Additionally, the as-prepared C@BNNT arrays show an improved structural stability in air at elevated temperatures, attributing to the outstanding thermal stability of the outer BNNT. This work provides new insights into tailoring the mechanical and thermal behaviours of arbitrary CNT arrays which enables a broader range of applications. MOE (Min. of Education, S’pore) Published version 2017-08-04T04:59:10Z 2019-12-06T15:23:59Z 2017-08-04T04:59:10Z 2019-12-06T15:23:59Z 2016 Journal Article Jing, L., Tay, R. Y., Li, H., Tsang, S. H., Huang, J., Tan, D., et al. (2016). Coaxial carbon@boron nitride nanotube arrays with enhanced thermal stability and compressive mechanical properties. Nanoscale, 8(21), 11114-11122. 2040-3364 https://hdl.handle.net/10356/83484 http://hdl.handle.net/10220/43549 10.1039/C6NR01199C en Nanoscale © 2016 The author(s). Published by The Royal Society of Chemistry. This is an open access article licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. 9 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Carbon nanotube arrays
Boron nitrides
spellingShingle Carbon nanotube arrays
Boron nitrides
Teo, Edwin Hang Tong
Jing, Lin
Tay, Roland Yingjie
Li, Hongling
Tsang, Siu Hon
Huang, Jingfeng
Tan, Dunlin
Zhang, Bowei
Tok, Alfred Iing Yoong
Coaxial carbon@boron nitride nanotube arrays with enhanced thermal stability and compressive mechanical properties
description Vertically aligned carbon nanotube (CNT) arrays have aroused considerable interest because of their remarkable mechanical properties. However, the mechanical behaviour of as-synthesized CNT arrays could vary drastically at a macro-scale depending on their morphologies, dimensions and array density, which are determined by the synthesis method. Here, we demonstrate a coaxial carbon@boron nitride nanotube (C@BNNT) array with enhanced compressive strength and shape recoverability. CNT arrays are grown using a commercially available thermal chemical vapor deposition (TCVD) technique and an outer BNNT with a wall thickness up to 1.37 nm is introduced by a post-growth TCVD treatment. Importantly, compared to the as-grown CNT arrays which deform almost plastically upon compression, the coaxial C@BNNT arrays exhibit an impressive ∼4-fold increase in compressive strength with nearly full recovery after the first compression cycle at a 50% strain (76% recovery maintained after 10 cycles), as well as a significantly high and persistent energy dissipation ratio (∼60% at a 50% strain after 100 cycles), attributed to the synergistic effect between the CNT and outer BNNT. Additionally, the as-prepared C@BNNT arrays show an improved structural stability in air at elevated temperatures, attributing to the outstanding thermal stability of the outer BNNT. This work provides new insights into tailoring the mechanical and thermal behaviours of arbitrary CNT arrays which enables a broader range of applications.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Teo, Edwin Hang Tong
Jing, Lin
Tay, Roland Yingjie
Li, Hongling
Tsang, Siu Hon
Huang, Jingfeng
Tan, Dunlin
Zhang, Bowei
Tok, Alfred Iing Yoong
format Article
author Teo, Edwin Hang Tong
Jing, Lin
Tay, Roland Yingjie
Li, Hongling
Tsang, Siu Hon
Huang, Jingfeng
Tan, Dunlin
Zhang, Bowei
Tok, Alfred Iing Yoong
author_sort Teo, Edwin Hang Tong
title Coaxial carbon@boron nitride nanotube arrays with enhanced thermal stability and compressive mechanical properties
title_short Coaxial carbon@boron nitride nanotube arrays with enhanced thermal stability and compressive mechanical properties
title_full Coaxial carbon@boron nitride nanotube arrays with enhanced thermal stability and compressive mechanical properties
title_fullStr Coaxial carbon@boron nitride nanotube arrays with enhanced thermal stability and compressive mechanical properties
title_full_unstemmed Coaxial carbon@boron nitride nanotube arrays with enhanced thermal stability and compressive mechanical properties
title_sort coaxial carbon@boron nitride nanotube arrays with enhanced thermal stability and compressive mechanical properties
publishDate 2017
url https://hdl.handle.net/10356/83484
http://hdl.handle.net/10220/43549
_version_ 1681056173540769792