Diamine vapor treatment of viscoelastic graphene oxide liquid crystal for gas barrier coating

Abstract A layered graphene oxide/ethylenediamine (GO/EDA) composite film was developed by exposing aqueous GO liquid crystal (GOLC) coating to EDA vapor and its effects on the gas barrier performance of GO film were systematically investigated. When a GO/EDA coating with a thickness of approximatel...

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Autores principales:	Seung Eun Choi, Sung-Soo Kim, Eunji Choi, Ji Hoon Kim, Yunkyu Choi, Junhyeok Kang, Ohchan Kwon, Dae Woo Kim
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/839f87cda5e743a589795972d9326c98
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spelling	oai:doaj.org-article:839f87cda5e743a589795972d9326c982021-12-02T14:41:56ZDiamine vapor treatment of viscoelastic graphene oxide liquid crystal for gas barrier coating10.1038/s41598-021-88955-52045-2322https://doaj.org/article/839f87cda5e743a589795972d9326c982021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-88955-5https://doaj.org/toc/2045-2322Abstract A layered graphene oxide/ethylenediamine (GO/EDA) composite film was developed by exposing aqueous GO liquid crystal (GOLC) coating to EDA vapor and its effects on the gas barrier performance of GO film were systematically investigated. When a GO/EDA coating with a thickness of approximately 1 μm was applied to a neat polyethylene terephthalate (PET) film, the resultant film was highly impermeable to gas molecules, particularly reducing the gas permeance up to 99.6% for He and 98.5% for H2 in comparison to the neat PET film. The gas barrier properties can be attributed to the long diffusion length through stacked GO nanosheets. The EDA can crosslink oxygen-containing groups of GO, enhancing the mechanical properties of the GO/EDA coating with hardness and elastic modulus values up to 1.14 and 28.7 GPa, respectively. By the synergistic effect of the viscoelastic properties of GOLC and the volatility of EDA, this coating method can be applied to complex geometries and EDA intercalation can be spontaneously achieved through the scaffold of the GOLC.Seung Eun ChoiSung-Soo KimEunji ChoiJi Hoon KimYunkyu ChoiJunhyeok KangOhchan KwonDae Woo KimNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Seung Eun Choi Sung-Soo Kim Eunji Choi Ji Hoon Kim Yunkyu Choi Junhyeok Kang Ohchan Kwon Dae Woo Kim Diamine vapor treatment of viscoelastic graphene oxide liquid crystal for gas barrier coating
description	Abstract A layered graphene oxide/ethylenediamine (GO/EDA) composite film was developed by exposing aqueous GO liquid crystal (GOLC) coating to EDA vapor and its effects on the gas barrier performance of GO film were systematically investigated. When a GO/EDA coating with a thickness of approximately 1 μm was applied to a neat polyethylene terephthalate (PET) film, the resultant film was highly impermeable to gas molecules, particularly reducing the gas permeance up to 99.6% for He and 98.5% for H2 in comparison to the neat PET film. The gas barrier properties can be attributed to the long diffusion length through stacked GO nanosheets. The EDA can crosslink oxygen-containing groups of GO, enhancing the mechanical properties of the GO/EDA coating with hardness and elastic modulus values up to 1.14 and 28.7 GPa, respectively. By the synergistic effect of the viscoelastic properties of GOLC and the volatility of EDA, this coating method can be applied to complex geometries and EDA intercalation can be spontaneously achieved through the scaffold of the GOLC.
format	article
author	Seung Eun Choi Sung-Soo Kim Eunji Choi Ji Hoon Kim Yunkyu Choi Junhyeok Kang Ohchan Kwon Dae Woo Kim
author_facet	Seung Eun Choi Sung-Soo Kim Eunji Choi Ji Hoon Kim Yunkyu Choi Junhyeok Kang Ohchan Kwon Dae Woo Kim
author_sort	Seung Eun Choi
title	Diamine vapor treatment of viscoelastic graphene oxide liquid crystal for gas barrier coating
title_short	Diamine vapor treatment of viscoelastic graphene oxide liquid crystal for gas barrier coating
title_full	Diamine vapor treatment of viscoelastic graphene oxide liquid crystal for gas barrier coating
title_fullStr	Diamine vapor treatment of viscoelastic graphene oxide liquid crystal for gas barrier coating
title_full_unstemmed	Diamine vapor treatment of viscoelastic graphene oxide liquid crystal for gas barrier coating
title_sort	diamine vapor treatment of viscoelastic graphene oxide liquid crystal for gas barrier coating
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/839f87cda5e743a589795972d9326c98
work_keys_str_mv	AT seungeunchoi diaminevaportreatmentofviscoelasticgrapheneoxideliquidcrystalforgasbarriercoating AT sungsookim diaminevaportreatmentofviscoelasticgrapheneoxideliquidcrystalforgasbarriercoating AT eunjichoi diaminevaportreatmentofviscoelasticgrapheneoxideliquidcrystalforgasbarriercoating AT jihoonkim diaminevaportreatmentofviscoelasticgrapheneoxideliquidcrystalforgasbarriercoating AT yunkyuchoi diaminevaportreatmentofviscoelasticgrapheneoxideliquidcrystalforgasbarriercoating AT junhyeokkang diaminevaportreatmentofviscoelasticgrapheneoxideliquidcrystalforgasbarriercoating AT ohchankwon diaminevaportreatmentofviscoelasticgrapheneoxideliquidcrystalforgasbarriercoating AT daewookim diaminevaportreatmentofviscoelasticgrapheneoxideliquidcrystalforgasbarriercoating
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Diamine vapor treatment of viscoelastic graphene oxide liquid crystal for gas barrier coating

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