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Synthesis and characterization of semiaromatic copolyamide 10T/1014 with high performance and flexibility

Poly (decamethylene terephthalamide) (PA10T) is a kind of engineering plastics with high strength and high modulus, but one of its disadvantages is its low elongation at break. In order to improve the flexibility of PA10T, one aliphatic comonomer with a long alkyl chain is introduced to the molecula...

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Autores principales: Feng, Wutong, Wang, Pingli, Zou, Guangji, Ren, Zhonglai, Ji, Junhui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Taylor & Francis 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5917439/
https://www.ncbi.nlm.nih.gov/pubmed/29706846
http://dx.doi.org/10.1080/15685551.2018.1446278
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author Feng, Wutong
Wang, Pingli
Zou, Guangji
Ren, Zhonglai
Ji, Junhui
author_facet Feng, Wutong
Wang, Pingli
Zou, Guangji
Ren, Zhonglai
Ji, Junhui
author_sort Feng, Wutong
collection PubMed
description Poly (decamethylene terephthalamide) (PA10T) is a kind of engineering plastics with high strength and high modulus, but one of its disadvantages is its low elongation at break. In order to improve the flexibility of PA10T, one aliphatic comonomer with a long alkyl chain is introduced to the molecular chain of PA10T. Then long chain semiaromatic copolyamides 10T/1014 were synthesized with different contents of 1014 units by polycondensation reaction of 1,10-diaminodecane, terephthalic acid and 1,12-dodecanedicarboxylic acid in deionized water. The intrinsic viscosities of the resultant polyamides ranged from 0.90 to 1.03 dL/g were obtained. The chemical and crystal structures of the copolymers were characterized by FTIR, (1)H-NMR and WAXD. These copolyamides exhibited outstanding thermal properties with melting points range of 306–295 °C and degradation temperatures range of 479–472 °C at maximum degradation rate, and also have a wider processing window than PA10T. The tensile strength of PA10T/1014 copolymers decreased gradually from 80.02 to 72.95 MPa as the content of 1014 units increasing from 5 to 20 mol %, while the elongation at break increased significantly from 57 to 150%. The moisture content of 10T/1014 copolyamides decreased with increasing the 1014 unit contents. It suggests that 10T/1014 copolyamides could be a kind of promising heat-resistant engineering thermoplastic in the future applications.
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spelling pubmed-59174392018-04-27 Synthesis and characterization of semiaromatic copolyamide 10T/1014 with high performance and flexibility Feng, Wutong Wang, Pingli Zou, Guangji Ren, Zhonglai Ji, Junhui Des Monomers Polym Article Poly (decamethylene terephthalamide) (PA10T) is a kind of engineering plastics with high strength and high modulus, but one of its disadvantages is its low elongation at break. In order to improve the flexibility of PA10T, one aliphatic comonomer with a long alkyl chain is introduced to the molecular chain of PA10T. Then long chain semiaromatic copolyamides 10T/1014 were synthesized with different contents of 1014 units by polycondensation reaction of 1,10-diaminodecane, terephthalic acid and 1,12-dodecanedicarboxylic acid in deionized water. The intrinsic viscosities of the resultant polyamides ranged from 0.90 to 1.03 dL/g were obtained. The chemical and crystal structures of the copolymers were characterized by FTIR, (1)H-NMR and WAXD. These copolyamides exhibited outstanding thermal properties with melting points range of 306–295 °C and degradation temperatures range of 479–472 °C at maximum degradation rate, and also have a wider processing window than PA10T. The tensile strength of PA10T/1014 copolymers decreased gradually from 80.02 to 72.95 MPa as the content of 1014 units increasing from 5 to 20 mol %, while the elongation at break increased significantly from 57 to 150%. The moisture content of 10T/1014 copolyamides decreased with increasing the 1014 unit contents. It suggests that 10T/1014 copolyamides could be a kind of promising heat-resistant engineering thermoplastic in the future applications. Taylor & Francis 2018-03-12 /pmc/articles/PMC5917439/ /pubmed/29706846 http://dx.doi.org/10.1080/15685551.2018.1446278 Text en © 2018 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Article
Feng, Wutong
Wang, Pingli
Zou, Guangji
Ren, Zhonglai
Ji, Junhui
Synthesis and characterization of semiaromatic copolyamide 10T/1014 with high performance and flexibility
title Synthesis and characterization of semiaromatic copolyamide 10T/1014 with high performance and flexibility
title_full Synthesis and characterization of semiaromatic copolyamide 10T/1014 with high performance and flexibility
title_fullStr Synthesis and characterization of semiaromatic copolyamide 10T/1014 with high performance and flexibility
title_full_unstemmed Synthesis and characterization of semiaromatic copolyamide 10T/1014 with high performance and flexibility
title_short Synthesis and characterization of semiaromatic copolyamide 10T/1014 with high performance and flexibility
title_sort synthesis and characterization of semiaromatic copolyamide 10t/1014 with high performance and flexibility
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5917439/
https://www.ncbi.nlm.nih.gov/pubmed/29706846
http://dx.doi.org/10.1080/15685551.2018.1446278
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