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Effects of electron beam irradiation on the thermal properties of scrap polytetrafluoroethylene

This study is focused on analyzing the effects of electron beam (EB) irradiation at high doses and normal atmospheric conditions on the thermal stability of scrap polytetrafluoroethylene (PTFE) solid to facilitate the recycling process of the material by grinding it into micro-powder additives for v...

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Main Authors: Sivanesan Appadu,, Chantara Thevy Ratnam,, Sahrim Ahmad,, Ruey, Shan Chen, Teo, Ming Ting, Gupta, Thummalapalli C.S.M.
Format: Article
Language:English
Published: Universiti Kebangsaan Malaysia 2022
Online Access:http://journalarticle.ukm.my/21029/1/SBL%2020.pdf
http://journalarticle.ukm.my/21029/
http://www.ukm.my/jsm/index.html
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spelling my-ukm.journal.210292023-02-01T08:15:14Z http://journalarticle.ukm.my/21029/ Effects of electron beam irradiation on the thermal properties of scrap polytetrafluoroethylene Sivanesan Appadu, Chantara Thevy Ratnam, Sahrim Ahmad, Ruey, Shan Chen Teo, Ming Ting Gupta, Thummalapalli C.S.M. This study is focused on analyzing the effects of electron beam (EB) irradiation at high doses and normal atmospheric conditions on the thermal stability of scrap polytetrafluoroethylene (PTFE) solid to facilitate the recycling process of the material by grinding it into micro-powder additives for various applications. In this work, PTFE scrap with thickness not exceeding 1 mm was irradiated in doses between 0 - 1500 kGy using an electron beam accelerator machine (EBM) with a voltage energy of 3 MeV and current of 10 mA and grinded into powder by using a laboratory mill. The changes in morphology of the grinded powder, crystallinity and thermal properties of PTFE with increasing irradiation dose was studied by using scanning electron microscopy (SEM), X-ray diffraction (XRD) analysis, thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The photomicrographs obtained from SEM showed that the particle size of the grinded micro-powder decreases with increasing irradiation dose with best results observed at 1500 kGy dose. DSC analysis showed that the crystallization temperature (Tc) and melting temperature (Tm) decreases with increasing irradiation doses as a result of lower molecular weight. XRD analysis of the irradiated PTFE indicated that the intensity of the peak had increased with increasing doses of irradiation due to the increase in crystallinity of the material. The distinctly shorter derivative thermogravimetric (DTG) peak height at 1500 kGy shows higher rate of mass loss at that dose due to the rapid loss of mechanical properties caused by degradation. Universiti Kebangsaan Malaysia 2022 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/21029/1/SBL%2020.pdf Sivanesan Appadu, and Chantara Thevy Ratnam, and Sahrim Ahmad, and Ruey, Shan Chen and Teo, Ming Ting and Gupta, Thummalapalli C.S.M. (2022) Effects of electron beam irradiation on the thermal properties of scrap polytetrafluoroethylene. Sains Malaysiana, 51 (11). pp. 3765-3774. ISSN 0126-6039 http://www.ukm.my/jsm/index.html
institution Universiti Kebangsaan Malaysia
building Tun Sri Lanang Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Kebangsaan Malaysia
content_source UKM Journal Article Repository
url_provider http://journalarticle.ukm.my/
language English
description This study is focused on analyzing the effects of electron beam (EB) irradiation at high doses and normal atmospheric conditions on the thermal stability of scrap polytetrafluoroethylene (PTFE) solid to facilitate the recycling process of the material by grinding it into micro-powder additives for various applications. In this work, PTFE scrap with thickness not exceeding 1 mm was irradiated in doses between 0 - 1500 kGy using an electron beam accelerator machine (EBM) with a voltage energy of 3 MeV and current of 10 mA and grinded into powder by using a laboratory mill. The changes in morphology of the grinded powder, crystallinity and thermal properties of PTFE with increasing irradiation dose was studied by using scanning electron microscopy (SEM), X-ray diffraction (XRD) analysis, thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The photomicrographs obtained from SEM showed that the particle size of the grinded micro-powder decreases with increasing irradiation dose with best results observed at 1500 kGy dose. DSC analysis showed that the crystallization temperature (Tc) and melting temperature (Tm) decreases with increasing irradiation doses as a result of lower molecular weight. XRD analysis of the irradiated PTFE indicated that the intensity of the peak had increased with increasing doses of irradiation due to the increase in crystallinity of the material. The distinctly shorter derivative thermogravimetric (DTG) peak height at 1500 kGy shows higher rate of mass loss at that dose due to the rapid loss of mechanical properties caused by degradation.
format Article
author Sivanesan Appadu,
Chantara Thevy Ratnam,
Sahrim Ahmad,
Ruey, Shan Chen
Teo, Ming Ting
Gupta, Thummalapalli C.S.M.
spellingShingle Sivanesan Appadu,
Chantara Thevy Ratnam,
Sahrim Ahmad,
Ruey, Shan Chen
Teo, Ming Ting
Gupta, Thummalapalli C.S.M.
Effects of electron beam irradiation on the thermal properties of scrap polytetrafluoroethylene
author_facet Sivanesan Appadu,
Chantara Thevy Ratnam,
Sahrim Ahmad,
Ruey, Shan Chen
Teo, Ming Ting
Gupta, Thummalapalli C.S.M.
author_sort Sivanesan Appadu,
title Effects of electron beam irradiation on the thermal properties of scrap polytetrafluoroethylene
title_short Effects of electron beam irradiation on the thermal properties of scrap polytetrafluoroethylene
title_full Effects of electron beam irradiation on the thermal properties of scrap polytetrafluoroethylene
title_fullStr Effects of electron beam irradiation on the thermal properties of scrap polytetrafluoroethylene
title_full_unstemmed Effects of electron beam irradiation on the thermal properties of scrap polytetrafluoroethylene
title_sort effects of electron beam irradiation on the thermal properties of scrap polytetrafluoroethylene
publisher Universiti Kebangsaan Malaysia
publishDate 2022
url http://journalarticle.ukm.my/21029/1/SBL%2020.pdf
http://journalarticle.ukm.my/21029/
http://www.ukm.my/jsm/index.html
_version_ 1756685274151124992
score 13.211869

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