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Effect Of Halloysite Nanotubes On The Performance Of Self-Healing Natural Rubber

In this study, a self-healing natural rubber (NR) based on metal-thiolate ion network was developed using halloysite nanotubes (HNT) as filler and the corresponding mechanical and physical properties, morphological, elemental, thermal properties of both HNT filler and self-healing NR/HNT nanocompo...

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Main Author: Tang, Zi Jie
Format: Monograph
Language:English
Published: Universiti Sains Malaysia 2022
Subjects:
T Technology
TN Mining Engineering. Metallurgy
Online Access:http://eprints.usm.my/56660/1/Effect%20Of%20Halloysite%20Nanotubes%20On%20The%20Performance%20Of%20Self-Healing%20Natural%20Rubber_Tang%20Zi%20Jie.pdf
http://eprints.usm.my/56660/
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spelling my.usm.eprints.56660 http://eprints.usm.my/56660/ Effect Of Halloysite Nanotubes On The Performance Of Self-Healing Natural Rubber Tang, Zi Jie T Technology TN Mining Engineering. Metallurgy In this study, a self-healing natural rubber (NR) based on metal-thiolate ion network was developed using halloysite nanotubes (HNT) as filler and the corresponding mechanical and physical properties, morphological, elemental, thermal properties of both HNT filler and self-healing NR/HNT nanocomposites were evaluated. The self-healing capability of the samples were proved by optical microscopy by which the fracture surface nearly healed when two broken pieces were brought in contact with each other. The mechanical properties indicated the tensile strength significantly increased with the increasing of healing time and healing temperature. In contrast, for the evaluation of mechanical performance, Scanning Electron Microscopy (SEM) images reveal that better recovery was achieved in nanocomposites compound with lower filler loading as no obvious gap was observed in lower loading. From tensile and tear test, the optimum filler loading was 8 phr. In contrast, for compression set test, sample with 8 phr exhibit lowest compression set, meaning that the sample was able to retain its elastic properties under compressive force. Also, hardness was enhanced from 12.67 to 18.33 Shore A by the addition of 10 phr HNT. The relative density was increased from 1.01 to 1.03 with the increasing of filler loading from 0 to 10 phr. Fourier-transform infrared spectroscopy (FTIR) confirmed the Si-O and Al-OH in HNT as well as C=S and SCC bonding in zinc thiolate, indicates that the reversible ionic bonding of Zn2+. The results proved that NR/HNT nanocomposites was able to self-healed at room temperature and healed more with the applied of pressure. Also, the reversible ionic supramolecular network was formed within the nanocomposites and contributed to self-healing mechanisms. Universiti Sains Malaysia 2022-08-18 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/56660/1/Effect%20Of%20Halloysite%20Nanotubes%20On%20The%20Performance%20Of%20Self-Healing%20Natural%20Rubber_Tang%20Zi%20Jie.pdf Tang, Zi Jie (2022) Effect Of Halloysite Nanotubes On The Performance Of Self-Healing Natural Rubber. Project Report. Universiti Sains Malaysia, Pusat Pengajian Kejuruteraan Bahan dan Sumber Mineral. (Submitted)
institution Universiti Sains Malaysia
building Hamzah Sendut Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Sains Malaysia
content_source USM Institutional Repository
url_provider http://eprints.usm.my/
language English
topic T Technology
TN Mining Engineering. Metallurgy
spellingShingle T Technology
TN Mining Engineering. Metallurgy
Tang, Zi Jie
Effect Of Halloysite Nanotubes On The Performance Of Self-Healing Natural Rubber
description In this study, a self-healing natural rubber (NR) based on metal-thiolate ion network was developed using halloysite nanotubes (HNT) as filler and the corresponding mechanical and physical properties, morphological, elemental, thermal properties of both HNT filler and self-healing NR/HNT nanocomposites were evaluated. The self-healing capability of the samples were proved by optical microscopy by which the fracture surface nearly healed when two broken pieces were brought in contact with each other. The mechanical properties indicated the tensile strength significantly increased with the increasing of healing time and healing temperature. In contrast, for the evaluation of mechanical performance, Scanning Electron Microscopy (SEM) images reveal that better recovery was achieved in nanocomposites compound with lower filler loading as no obvious gap was observed in lower loading. From tensile and tear test, the optimum filler loading was 8 phr. In contrast, for compression set test, sample with 8 phr exhibit lowest compression set, meaning that the sample was able to retain its elastic properties under compressive force. Also, hardness was enhanced from 12.67 to 18.33 Shore A by the addition of 10 phr HNT. The relative density was increased from 1.01 to 1.03 with the increasing of filler loading from 0 to 10 phr. Fourier-transform infrared spectroscopy (FTIR) confirmed the Si-O and Al-OH in HNT as well as C=S and SCC bonding in zinc thiolate, indicates that the reversible ionic bonding of Zn2+. The results proved that NR/HNT nanocomposites was able to self-healed at room temperature and healed more with the applied of pressure. Also, the reversible ionic supramolecular network was formed within the nanocomposites and contributed to self-healing mechanisms.
format Monograph
author Tang, Zi Jie
author_facet Tang, Zi Jie
author_sort Tang, Zi Jie
title Effect Of Halloysite Nanotubes On The Performance Of Self-Healing Natural Rubber
title_short Effect Of Halloysite Nanotubes On The Performance Of Self-Healing Natural Rubber
title_full Effect Of Halloysite Nanotubes On The Performance Of Self-Healing Natural Rubber
title_fullStr Effect Of Halloysite Nanotubes On The Performance Of Self-Healing Natural Rubber
title_full_unstemmed Effect Of Halloysite Nanotubes On The Performance Of Self-Healing Natural Rubber
title_sort effect of halloysite nanotubes on the performance of self-healing natural rubber
publisher Universiti Sains Malaysia
publishDate 2022
url http://eprints.usm.my/56660/1/Effect%20Of%20Halloysite%20Nanotubes%20On%20The%20Performance%20Of%20Self-Healing%20Natural%20Rubber_Tang%20Zi%20Jie.pdf
http://eprints.usm.my/56660/
_version_ 1756685091529031680
score 13.211869

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