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Colorless Semi-Alicyclic Copolyimides with High Thermal Stability and Solubility

A series of colorless copolyimide films with high thermal stability and good solubility are synthesized from (trifluoromethyl)biphenyl-4,4’-diamine (TFMB) with different 1,2,4,5-cyclohexanetetracarboxylic dianhydride (HPMDA) to 2,2-bis(3,4-dicarboxyphenyl)-hexafluoropropane (6FDA) dianhydride mole r...

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Autores principales: Lan, Zhongxu, Li, Chunyu, Yu, Yanlei, Wei, Jia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6723692/
https://www.ncbi.nlm.nih.gov/pubmed/31394813
http://dx.doi.org/10.3390/polym11081319
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author Lan, Zhongxu
Li, Chunyu
Yu, Yanlei
Wei, Jia
author_facet Lan, Zhongxu
Li, Chunyu
Yu, Yanlei
Wei, Jia
author_sort Lan, Zhongxu
collection PubMed
description A series of colorless copolyimide films with high thermal stability and good solubility are synthesized from (trifluoromethyl)biphenyl-4,4’-diamine (TFMB) with different 1,2,4,5-cyclohexanetetracarboxylic dianhydride (HPMDA) to 2,2-bis(3,4-dicarboxyphenyl)-hexafluoropropane (6FDA) dianhydride mole ratios through one-pot solution polycondensation. These copolyimide films exhibit excellent optical transparency (T(400) > 90% and λ(0) ~305–333 nm) with a thickness of 15 μm and good solubility in most organic solvents. The excellent optical properties are mainly attributed to the low inter- and intra-molecular charge transfer interactions due to the alicyclic structure and the strong electronegative CF(3) groups. The glass transition temperature increases from 332 to 352 °C with increasing HPMDA content in the copolymers, while the thermal decomposition temperature is improved with increasing 6FDA content. These results indicate that the copolyimide films can be successfully utilized in the development of novel heat-resistant plastic substrates for the optoelectronic engineering applications.
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spelling pubmed-67236922019-09-10 Colorless Semi-Alicyclic Copolyimides with High Thermal Stability and Solubility Lan, Zhongxu Li, Chunyu Yu, Yanlei Wei, Jia Polymers (Basel) Article A series of colorless copolyimide films with high thermal stability and good solubility are synthesized from (trifluoromethyl)biphenyl-4,4’-diamine (TFMB) with different 1,2,4,5-cyclohexanetetracarboxylic dianhydride (HPMDA) to 2,2-bis(3,4-dicarboxyphenyl)-hexafluoropropane (6FDA) dianhydride mole ratios through one-pot solution polycondensation. These copolyimide films exhibit excellent optical transparency (T(400) > 90% and λ(0) ~305–333 nm) with a thickness of 15 μm and good solubility in most organic solvents. The excellent optical properties are mainly attributed to the low inter- and intra-molecular charge transfer interactions due to the alicyclic structure and the strong electronegative CF(3) groups. The glass transition temperature increases from 332 to 352 °C with increasing HPMDA content in the copolymers, while the thermal decomposition temperature is improved with increasing 6FDA content. These results indicate that the copolyimide films can be successfully utilized in the development of novel heat-resistant plastic substrates for the optoelectronic engineering applications. MDPI 2019-08-07 /pmc/articles/PMC6723692/ /pubmed/31394813 http://dx.doi.org/10.3390/polym11081319 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Lan, Zhongxu
Li, Chunyu
Yu, Yanlei
Wei, Jia
Colorless Semi-Alicyclic Copolyimides with High Thermal Stability and Solubility
title Colorless Semi-Alicyclic Copolyimides with High Thermal Stability and Solubility
title_full Colorless Semi-Alicyclic Copolyimides with High Thermal Stability and Solubility
title_fullStr Colorless Semi-Alicyclic Copolyimides with High Thermal Stability and Solubility
title_full_unstemmed Colorless Semi-Alicyclic Copolyimides with High Thermal Stability and Solubility
title_short Colorless Semi-Alicyclic Copolyimides with High Thermal Stability and Solubility
title_sort colorless semi-alicyclic copolyimides with high thermal stability and solubility
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6723692/
https://www.ncbi.nlm.nih.gov/pubmed/31394813
http://dx.doi.org/10.3390/polym11081319
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AT weijia colorlesssemialicycliccopolyimideswithhighthermalstabilityandsolubility