New Approach to Preparation of Heat-Resistant "Lola-M" Fiber.
| Title: | New Approach to Preparation of Heat-Resistant "Lola-M" Fiber. |
|---|---|
| Authors: | Ponomarev II; A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova St., 28, Moscow 119991, Russia.; Skvortsov IY; A.V. Topchiev Institute of Petrochemical Synthesis of Russian Academy of Sciences, Leninsky Av., 29, Moscow 119991, Russia.; Volkova YA; A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova St., 28, Moscow 119991, Russia.; Ponomarev II; A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova St., 28, Moscow 119991, Russia.; Varfolomeeva LA; A.V. Topchiev Institute of Petrochemical Synthesis of Russian Academy of Sciences, Leninsky Av., 29, Moscow 119991, Russia.; Razorenov DY; A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova St., 28, Moscow 119991, Russia.; Skupov KM; A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova St., 28, Moscow 119991, Russia.; Kuzin MS; A.V. Topchiev Institute of Petrochemical Synthesis of Russian Academy of Sciences, Leninsky Av., 29, Moscow 119991, Russia.; Serenko OA; A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova St., 28, Moscow 119991, Russia. |
| Source: | Materials (Basel, Switzerland) [Materials (Basel)] 2019 Oct 25; Vol. 12 (21). Date of Electronic Publication: 2019 Oct 25. |
| Publication Type: | Journal Article |
| Language: | English |
| Journal Info: | Publisher: MDPI Country of Publication: Switzerland NLM ID: 101555929 Publication Model: Electronic Cited Medium: Print ISSN: 1996-1944 (Print) Linking ISSN: 19961944 NLM ISO Abbreviation: Materials (Basel) Subsets: PubMed not MEDLINE |
| Imprint Name(s): | Publication: May 2010- : Basel, Switzerland : MDPI; Original Publication: Basel, Switzerland : Molecular Diversity Preservation International, 2008-2010. |
| Abstract: | 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. |
| References: | Polymers (Basel). 2018 Aug 02;10(8):null. (PMID: 30960781) |
| Grant Information: | 18-29-17062 mk Russian Foundation for Basic Research |
| Contributed Indexing: | Keywords: coagulant; fiber elastic modulus; fiber morphology; fiber strength; heterocyclic polymer; polymer fibers; polymer solution rheology; polynaphthoylenebenzimidazole; viscoelasticity; wet spinning |
| Entry Date(s): | Date Created: 20191117 Latest Revision: 20200928 |
| Update Code: | 20260130 |
| PubMed Central ID: | PMC6862234 |
| DOI: | 10.3390/ma12213490 |
| PMID: | 31731389 |
| Database: | MEDLINE |
Journal Article