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New Approach to Preparation of Heat-Resistant “Lola-M” Fiber

A new approach to the synthesis of polynaphthoylenebenzimidazoles and heat resistant fiber spinning has been developed using an environmentally friendly and energy efficient method, which operates with solutions of pre-polymers based on 3,3’,4,4’-tetraaminodiphenyl ether and 1,4,5,8-naphthalenetetra...

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Autores principales: Ponomarev, Igor I., Skvortsov, Ivan Y., Volkova, Yulia A., Ponomarev, Ivan I., Varfolomeeva, Lydia A., Razorenov, Dmitry Y., Skupov, Kirill M., Kuzin, Mikhail S., Serenko, Olga A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6862234/
https://www.ncbi.nlm.nih.gov/pubmed/31731389
http://dx.doi.org/10.3390/ma12213490
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author Ponomarev, Igor I.
Skvortsov, Ivan Y.
Volkova, Yulia A.
Ponomarev, Ivan I.
Varfolomeeva, Lydia A.
Razorenov, Dmitry Y.
Skupov, Kirill M.
Kuzin, Mikhail S.
Serenko, Olga A.
author_facet Ponomarev, Igor I.
Skvortsov, Ivan Y.
Volkova, Yulia A.
Ponomarev, Ivan I.
Varfolomeeva, Lydia A.
Razorenov, Dmitry Y.
Skupov, Kirill M.
Kuzin, Mikhail S.
Serenko, Olga A.
author_sort Ponomarev, Igor I.
collection PubMed
description A new approach to the synthesis of polynaphthoylenebenzimidazoles and heat resistant fiber spinning has been developed using an environmentally friendly and energy efficient method, which operates with solutions of pre-polymers based on 3,3’,4,4’-tetraaminodiphenyl ether and 1,4,5,8-naphthalenetetracarboxylic acid dianhydride in N-methylpyrrolidone. Rheological properties of polymer reaction solutions and appropriate coagulant mixtures were investigated for further wet spinning process. The coagulation process was investigated through microscopic observation of solution droplets which imitate jet/fiber cross section surrounded with coagulants of different composition. For the case of the most optimal viscoelastic properties of dopes the best coagulant was found to be a ternary mixture ethanol/water/NMP (20/10/70). Fibers were prepared through the wet spinning from pre-polymers of various molecular weight characterized by intrinsic viscosity. As a result, complex yarns were spun, and their morphology was characterized and mechanical properties were measured. The strength of ~300 MPa and elastic modulus of ~2 GPa and elongation at break of ~20% were reached for the best fibers at average diameter of ~20 µm. After heat treatment “Lola-M” fibers do not burn and do not support combustion in open flame.
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spelling pubmed-68622342019-12-05 New Approach to Preparation of Heat-Resistant “Lola-M” Fiber Ponomarev, Igor I. Skvortsov, Ivan Y. Volkova, Yulia A. Ponomarev, Ivan I. Varfolomeeva, Lydia A. Razorenov, Dmitry Y. Skupov, Kirill M. Kuzin, Mikhail S. Serenko, Olga A. Materials (Basel) Article A new approach to the synthesis of polynaphthoylenebenzimidazoles and heat resistant fiber spinning has been developed using an environmentally friendly and energy efficient method, which operates with solutions of pre-polymers based on 3,3’,4,4’-tetraaminodiphenyl ether and 1,4,5,8-naphthalenetetracarboxylic acid dianhydride in N-methylpyrrolidone. Rheological properties of polymer reaction solutions and appropriate coagulant mixtures were investigated for further wet spinning process. The coagulation process was investigated through microscopic observation of solution droplets which imitate jet/fiber cross section surrounded with coagulants of different composition. For the case of the most optimal viscoelastic properties of dopes the best coagulant was found to be a ternary mixture ethanol/water/NMP (20/10/70). Fibers were prepared through the wet spinning from pre-polymers of various molecular weight characterized by intrinsic viscosity. As a result, complex yarns were spun, and their morphology was characterized and mechanical properties were measured. The strength of ~300 MPa and elastic modulus of ~2 GPa and elongation at break of ~20% were reached for the best fibers at average diameter of ~20 µm. After heat treatment “Lola-M” fibers do not burn and do not support combustion in open flame. MDPI 2019-10-25 /pmc/articles/PMC6862234/ /pubmed/31731389 http://dx.doi.org/10.3390/ma12213490 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
Ponomarev, Igor I.
Skvortsov, Ivan Y.
Volkova, Yulia A.
Ponomarev, Ivan I.
Varfolomeeva, Lydia A.
Razorenov, Dmitry Y.
Skupov, Kirill M.
Kuzin, Mikhail S.
Serenko, Olga A.
New Approach to Preparation of Heat-Resistant “Lola-M” Fiber
title New Approach to Preparation of Heat-Resistant “Lola-M” Fiber
title_full New Approach to Preparation of Heat-Resistant “Lola-M” Fiber
title_fullStr New Approach to Preparation of Heat-Resistant “Lola-M” Fiber
title_full_unstemmed New Approach to Preparation of Heat-Resistant “Lola-M” Fiber
title_short New Approach to Preparation of Heat-Resistant “Lola-M” Fiber
title_sort new approach to preparation of heat-resistant “lola-m” fiber
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6862234/
https://www.ncbi.nlm.nih.gov/pubmed/31731389
http://dx.doi.org/10.3390/ma12213490
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