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Synthesis of electrospun polyacrylonitrile- derived carbon fibers and comparison of properties with bulk form

This study deals with the fabrication of polyacrylonitrile (PAN) nanofibers via an electrospinning process followed by stabilizing and carbonization in order to remove all non-carboneous matter and ensure a pure carboneous material. The as-spun PAN fibers were stabilized in air at 270°C for one hour...

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Autores principales: Alarifi, Ibrahim M., Khan, Waseem S., Asmatulu, Ramazan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6084898/
https://www.ncbi.nlm.nih.gov/pubmed/30091992
http://dx.doi.org/10.1371/journal.pone.0201345
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author Alarifi, Ibrahim M.
Khan, Waseem S.
Asmatulu, Ramazan
author_facet Alarifi, Ibrahim M.
Khan, Waseem S.
Asmatulu, Ramazan
author_sort Alarifi, Ibrahim M.
collection PubMed
description This study deals with the fabrication of polyacrylonitrile (PAN) nanofibers via an electrospinning process followed by stabilizing and carbonization in order to remove all non-carboneous matter and ensure a pure carboneous material. The as-spun PAN fibers were stabilized in air at 270°C for one hour and then carbonized at 750, 850, and 950°C in an inert atmosphere (argon) for another one hour. Differential scanning calorimetry and Raman spectroscopy were employed to determine the thermal and chemical properties of PAN. Surface features and morphologies of PAN-derived carbon nanofibers were investigated by means of scanning electron microscopy (SEM). SEM micrograms showed that fiber diameters were reduced after carbonization due to evolution of toxic gases and dehydrogenation. The Raman spectra of carbonized fibers manifested D/G peaks. The Raman spectroscopy peaks of 1100 and 500 cm(-1) manifested the formation of γ phase and another peak at 900 cm(-1) manifested the formation of α-phase. The water contact angle measurement of carbonized PAN fibers indicated that the nanofibers were superhydrophobic (θ > 150(o)) due to the formation of bumpy and pitted surface after carbonization. In DSC experiment, the stabilized fibers showed a broad exothermic peak at 308°C due to cyclization process. The mechanical andThermal analysis was used to ascertain mechanical properties of carbonized PAN fibers. PAN-derived carbon nanofibers possess excellent physica and mechanical properties and therefore, they may be suitable for many industrial applications such as energy, biomedical, and aerospace.
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spelling pubmed-60848982018-08-18 Synthesis of electrospun polyacrylonitrile- derived carbon fibers and comparison of properties with bulk form Alarifi, Ibrahim M. Khan, Waseem S. Asmatulu, Ramazan PLoS One Research Article This study deals with the fabrication of polyacrylonitrile (PAN) nanofibers via an electrospinning process followed by stabilizing and carbonization in order to remove all non-carboneous matter and ensure a pure carboneous material. The as-spun PAN fibers were stabilized in air at 270°C for one hour and then carbonized at 750, 850, and 950°C in an inert atmosphere (argon) for another one hour. Differential scanning calorimetry and Raman spectroscopy were employed to determine the thermal and chemical properties of PAN. Surface features and morphologies of PAN-derived carbon nanofibers were investigated by means of scanning electron microscopy (SEM). SEM micrograms showed that fiber diameters were reduced after carbonization due to evolution of toxic gases and dehydrogenation. The Raman spectra of carbonized fibers manifested D/G peaks. The Raman spectroscopy peaks of 1100 and 500 cm(-1) manifested the formation of γ phase and another peak at 900 cm(-1) manifested the formation of α-phase. The water contact angle measurement of carbonized PAN fibers indicated that the nanofibers were superhydrophobic (θ > 150(o)) due to the formation of bumpy and pitted surface after carbonization. In DSC experiment, the stabilized fibers showed a broad exothermic peak at 308°C due to cyclization process. The mechanical andThermal analysis was used to ascertain mechanical properties of carbonized PAN fibers. PAN-derived carbon nanofibers possess excellent physica and mechanical properties and therefore, they may be suitable for many industrial applications such as energy, biomedical, and aerospace. Public Library of Science 2018-08-09 /pmc/articles/PMC6084898/ /pubmed/30091992 http://dx.doi.org/10.1371/journal.pone.0201345 Text en https://creativecommons.org/publicdomain/zero/1.0/ This is an open access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 (https://creativecommons.org/publicdomain/zero/1.0/) public domain dedication.
spellingShingle Research Article
Alarifi, Ibrahim M.
Khan, Waseem S.
Asmatulu, Ramazan
Synthesis of electrospun polyacrylonitrile- derived carbon fibers and comparison of properties with bulk form
title Synthesis of electrospun polyacrylonitrile- derived carbon fibers and comparison of properties with bulk form
title_full Synthesis of electrospun polyacrylonitrile- derived carbon fibers and comparison of properties with bulk form
title_fullStr Synthesis of electrospun polyacrylonitrile- derived carbon fibers and comparison of properties with bulk form
title_full_unstemmed Synthesis of electrospun polyacrylonitrile- derived carbon fibers and comparison of properties with bulk form
title_short Synthesis of electrospun polyacrylonitrile- derived carbon fibers and comparison of properties with bulk form
title_sort synthesis of electrospun polyacrylonitrile- derived carbon fibers and comparison of properties with bulk form
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6084898/
https://www.ncbi.nlm.nih.gov/pubmed/30091992
http://dx.doi.org/10.1371/journal.pone.0201345
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