Study on polyethylene-based carbon fibers obtained by sulfonation under hydrostatic pressure

Abstract Polyethylene based carbon fibers were studied using high density polyethylene(HDPE) fibers and linear low density polyethylene(LLDPE) fibers with various melt flow index. The draw ratio of the polyethylene fibers and the sulfonation mechanism were investigated under hydrostatic pressures of...

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Autores principales:	Jong Hyun Eun, Joon Seok Lee
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3bac446089b34fe6a0cc7085e54168e1
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spelling	oai:doaj.org-article:3bac446089b34fe6a0cc7085e54168e12021-12-02T17:41:18ZStudy on polyethylene-based carbon fibers obtained by sulfonation under hydrostatic pressure10.1038/s41598-021-97529-42045-2322https://doaj.org/article/3bac446089b34fe6a0cc7085e54168e12021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-97529-4https://doaj.org/toc/2045-2322Abstract Polyethylene based carbon fibers were studied using high density polyethylene(HDPE) fibers and linear low density polyethylene(LLDPE) fibers with various melt flow index. The draw ratio of the polyethylene fibers and the sulfonation mechanism were investigated under hydrostatic pressures of 1 and 5 bar in the first time. The influence of the melt flow index of polyethylene and types of polyethylene fibers on the sulfonation reaction was studied. Carbon fibers were prepared through the sulfonation of LLDPE fibers possessing side chains with a high melt flow index. The polyethylene fibers, which exhibited thermoplastic properties and plastic behavior, were cross-linked through the sulfonation process. Their thermal properties and mechanical properties changed to thermoset properties and elastic behavior. Although sulfonation was performed under a hydrostatic pressure of 5 bar, it was difficult to convert the highly oriented polyethylene fibers because of their high crystallinity, but partially oriented polyethylene fibers could be converted to carbon fibers. Therefore, the effect of fiber orientation on fiber crosslinking, which has not been reported in previous literature, has been studied in detail, and a new method of hydrostatic pressure sulfonation has been successful in thermally stabilizing polyethylene fiber. Hydrostatic sulfonation was performed using partially oriented LLDPE fibers with a melt flow index of 20 at 130 °C for 2.5 h under a hydrostatic pressure of 5 bar. The resulting fibers were carbonized under the following conditions: 1000 °C, 5 °C/min, and five minutes. Carbon fibers with a tensile strength of 2.03 GPa, a tensile modulus of 143.63 GPa, and an elongation at break of 1.42% were prepared.Jong Hyun EunJoon Seok LeeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jong Hyun Eun Joon Seok Lee Study on polyethylene-based carbon fibers obtained by sulfonation under hydrostatic pressure
description	Abstract Polyethylene based carbon fibers were studied using high density polyethylene(HDPE) fibers and linear low density polyethylene(LLDPE) fibers with various melt flow index. The draw ratio of the polyethylene fibers and the sulfonation mechanism were investigated under hydrostatic pressures of 1 and 5 bar in the first time. The influence of the melt flow index of polyethylene and types of polyethylene fibers on the sulfonation reaction was studied. Carbon fibers were prepared through the sulfonation of LLDPE fibers possessing side chains with a high melt flow index. The polyethylene fibers, which exhibited thermoplastic properties and plastic behavior, were cross-linked through the sulfonation process. Their thermal properties and mechanical properties changed to thermoset properties and elastic behavior. Although sulfonation was performed under a hydrostatic pressure of 5 bar, it was difficult to convert the highly oriented polyethylene fibers because of their high crystallinity, but partially oriented polyethylene fibers could be converted to carbon fibers. Therefore, the effect of fiber orientation on fiber crosslinking, which has not been reported in previous literature, has been studied in detail, and a new method of hydrostatic pressure sulfonation has been successful in thermally stabilizing polyethylene fiber. Hydrostatic sulfonation was performed using partially oriented LLDPE fibers with a melt flow index of 20 at 130 °C for 2.5 h under a hydrostatic pressure of 5 bar. The resulting fibers were carbonized under the following conditions: 1000 °C, 5 °C/min, and five minutes. Carbon fibers with a tensile strength of 2.03 GPa, a tensile modulus of 143.63 GPa, and an elongation at break of 1.42% were prepared.
format	article
author	Jong Hyun Eun Joon Seok Lee
author_facet	Jong Hyun Eun Joon Seok Lee
author_sort	Jong Hyun Eun
title	Study on polyethylene-based carbon fibers obtained by sulfonation under hydrostatic pressure
title_short	Study on polyethylene-based carbon fibers obtained by sulfonation under hydrostatic pressure
title_full	Study on polyethylene-based carbon fibers obtained by sulfonation under hydrostatic pressure
title_fullStr	Study on polyethylene-based carbon fibers obtained by sulfonation under hydrostatic pressure
title_full_unstemmed	Study on polyethylene-based carbon fibers obtained by sulfonation under hydrostatic pressure
title_sort	study on polyethylene-based carbon fibers obtained by sulfonation under hydrostatic pressure
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/3bac446089b34fe6a0cc7085e54168e1
work_keys_str_mv	AT jonghyuneun studyonpolyethylenebasedcarbonfibersobtainedbysulfonationunderhydrostaticpressure AT joonseoklee studyonpolyethylenebasedcarbonfibersobtainedbysulfonationunderhydrostaticpressure
_version_	1718379698115837952

Study on polyethylene-based carbon fibers obtained by sulfonation under hydrostatic pressure

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