Highly Soluble Fluorinated Polyimides Synthesized with Hydrothermal Process towards Sustainable Green Technology

Polyimides, a widely used engineering plastic, require use of large amounts of toxic and hazardous organic solvents which threaten our daily lives, calling for new and easy synthetic methods for sustainable environmentally friendly development. In this paper, highly soluble fluorinated polyimides ba...

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Autores principales:	Juheon Lee, Seungho Baek, Jinsu Kim, Sangrae Lee, Jinyoung Kim, Haksoo Han
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	fluorinated polyimide hydrothermal process green Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/aa0e7a237bea4af4a56973aa8e0e71cf
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spelling	oai:doaj.org-article:aa0e7a237bea4af4a56973aa8e0e71cf2021-11-11T18:48:24ZHighly Soluble Fluorinated Polyimides Synthesized with Hydrothermal Process towards Sustainable Green Technology10.3390/polym132138242073-4360https://doaj.org/article/aa0e7a237bea4af4a56973aa8e0e71cf2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/21/3824https://doaj.org/toc/2073-4360Polyimides, a widely used engineering plastic, require use of large amounts of toxic and hazardous organic solvents which threaten our daily lives, calling for new and easy synthetic methods for sustainable environmentally friendly development. In this paper, highly soluble fluorinated polyimides based on 4,4′-(hexafluoroisopropylidene) diphthalic anhydride were synthesized via hydrothermal process without using any toxic organic solvents and the advantages of the newly demonstrated synthetic methods are shown by comparative analysis performed with the two conventional synthetic methods using organic solvent: thermal and chemical imidization. Lower temperature is required (~200 °C) compared to thermal imidization and functional groups for high fusibility formed more easily compared to chemical imidization. According to the comparative analysis, hydrothermally synthesized PIs showed excellent solubility and maintained high thermal stability (>500 °C) and glass transition temperature (>300 °C) compared to conventional PI. The hydrothermally synthesized polyimide is much more convenient to store and manage than other form of polyimide which is much more stable when it is exposed to humidity as it is a powder form. The hydrothermal synthetic method is verified to be a “Green” and facile method for sustainable PI synthesis.Juheon LeeSeungho BaekJinsu KimSangrae LeeJinyoung KimHaksoo HanMDPI AGarticlefluorinated polyimidehydrothermal processgreenOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3824, p 3824 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	fluorinated polyimide hydrothermal process green Organic chemistry QD241-441
spellingShingle	fluorinated polyimide hydrothermal process green Organic chemistry QD241-441 Juheon Lee Seungho Baek Jinsu Kim Sangrae Lee Jinyoung Kim Haksoo Han Highly Soluble Fluorinated Polyimides Synthesized with Hydrothermal Process towards Sustainable Green Technology
description	Polyimides, a widely used engineering plastic, require use of large amounts of toxic and hazardous organic solvents which threaten our daily lives, calling for new and easy synthetic methods for sustainable environmentally friendly development. In this paper, highly soluble fluorinated polyimides based on 4,4′-(hexafluoroisopropylidene) diphthalic anhydride were synthesized via hydrothermal process without using any toxic organic solvents and the advantages of the newly demonstrated synthetic methods are shown by comparative analysis performed with the two conventional synthetic methods using organic solvent: thermal and chemical imidization. Lower temperature is required (~200 °C) compared to thermal imidization and functional groups for high fusibility formed more easily compared to chemical imidization. According to the comparative analysis, hydrothermally synthesized PIs showed excellent solubility and maintained high thermal stability (>500 °C) and glass transition temperature (>300 °C) compared to conventional PI. The hydrothermally synthesized polyimide is much more convenient to store and manage than other form of polyimide which is much more stable when it is exposed to humidity as it is a powder form. The hydrothermal synthetic method is verified to be a “Green” and facile method for sustainable PI synthesis.
format	article
author	Juheon Lee Seungho Baek Jinsu Kim Sangrae Lee Jinyoung Kim Haksoo Han
author_facet	Juheon Lee Seungho Baek Jinsu Kim Sangrae Lee Jinyoung Kim Haksoo Han
author_sort	Juheon Lee
title	Highly Soluble Fluorinated Polyimides Synthesized with Hydrothermal Process towards Sustainable Green Technology
title_short	Highly Soluble Fluorinated Polyimides Synthesized with Hydrothermal Process towards Sustainable Green Technology
title_full	Highly Soluble Fluorinated Polyimides Synthesized with Hydrothermal Process towards Sustainable Green Technology
title_fullStr	Highly Soluble Fluorinated Polyimides Synthesized with Hydrothermal Process towards Sustainable Green Technology
title_full_unstemmed	Highly Soluble Fluorinated Polyimides Synthesized with Hydrothermal Process towards Sustainable Green Technology
title_sort	highly soluble fluorinated polyimides synthesized with hydrothermal process towards sustainable green technology
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/aa0e7a237bea4af4a56973aa8e0e71cf
work_keys_str_mv	AT juheonlee highlysolublefluorinatedpolyimidessynthesizedwithhydrothermalprocesstowardssustainablegreentechnology AT seunghobaek highlysolublefluorinatedpolyimidessynthesizedwithhydrothermalprocesstowardssustainablegreentechnology AT jinsukim highlysolublefluorinatedpolyimidessynthesizedwithhydrothermalprocesstowardssustainablegreentechnology AT sangraelee highlysolublefluorinatedpolyimidessynthesizedwithhydrothermalprocesstowardssustainablegreentechnology AT jinyoungkim highlysolublefluorinatedpolyimidessynthesizedwithhydrothermalprocesstowardssustainablegreentechnology AT haksoohan highlysolublefluorinatedpolyimidessynthesizedwithhydrothermalprocesstowardssustainablegreentechnology
_version_	1718431717967003648

Highly Soluble Fluorinated Polyimides Synthesized with Hydrothermal Process towards Sustainable Green Technology

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