A Novel Technique for Fiber Formation: Mechanotropic Spinning-Principle and Realization.
| Title: | A Novel Technique for Fiber Formation: Mechanotropic Spinning-Principle and Realization. |
|---|---|
| Authors: | Kulichikhin VG; A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences 29, Leninsky prospect, Moscow 119991, Russia. klch@ips.ac.ru.; Skvortsov IY; A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences 29, Leninsky prospect, Moscow 119991, Russia. amber5@yandex.ru.; Subbotin AV; A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences 29, Leninsky prospect, Moscow 119991, Russia. subbotin@ips.ac.ru.; Kotomin SV; A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences 29, Leninsky prospect, Moscow 119991, Russia. svk@ips.ac.ru.; Malkin AY; A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences 29, Leninsky prospect, Moscow 119991, Russia. Alex_malkin@mig.phys.msu.ru. |
| Source: | Polymers [Polymers (Basel)] 2018 Aug 02; Vol. 10 (8). Date of Electronic Publication: 2018 Aug 02. |
| Publication Type: | Journal Article |
| Language: | English |
| Journal Info: | Publisher: MDPI Country of Publication: Switzerland NLM ID: 101545357 Publication Model: Electronic Cited Medium: Internet ISSN: 2073-4360 (Electronic) Linking ISSN: 20734360 NLM ISO Abbreviation: Polymers (Basel) Subsets: PubMed not MEDLINE |
| Imprint Name(s): | Original Publication: Basel : MDPI |
| Abstract: | We present basic experimental data and the theoretical background of a novel technique for fiber spinning from polymer solutions. The principal feature of the advanced process is realization of phase separation with detachment of a solvent, accompanied by the orientation of macromolecules, under the action of high extension rates. This is similar in some respects to dry spinning, though the driving force is not diffusion with subsequent evaporation of a solvent but redistribution of polymer-solvent interactions in favor of polymer-polymer and solvent-solvent ones governed by mechanical stresses. A promise of this approach has been demonstrated by experiments performed with polyacrylonitrile solutions in different solvents and solutions of the rigid-chain aromatic polyamide. We examined mechanotropic fiber spinning in model experiments with stretching jets from a drop of polymer solution in different conditions, and then demonstrated the possibility of realizing this process in the stable long-term continuous mode. During extension, phase separation happens throughout the whole section of a jet, as was confirmed by visual observation. Then a solvent diffuses on a jet surface, forming a liquid shell on the oriented fiber. Instability of this cover due to surface tension leads either to formation of separate solvent drops "seating" on the fiber or to the flow of a solvent down to the Taylor cone. The separate liquid droplets can be easily taken off a fiber. The physics underlying this process is related to the analysis of the influence of macromolecule coil-to-stretched chain transition on the intermolecular interaction. |
| References: | ACS Macro Lett. 2013 Aug 20;2(8):741-744. (PMID: 35606961); Eur Phys J E Soft Matter. 2014 Feb;37(2):10. (PMID: 24566664); Phys Rev Lett. 2008 Apr 25;100(16):164502. (PMID: 18518206); Rev Sci Instrum. 2011 Apr;82(4):045104. (PMID: 21529036); Phys Rev Lett. 2016 Aug 19;117(8):087801. (PMID: 27588883); ACS Appl Mater Interfaces. 2017 Jul 19;9(28):24100-24110. (PMID: 28650630); Phys Rev Lett. 2007 Dec 7;99(23):237801. (PMID: 18233412) |
| Grant Information: | 7-79-30108 Russian Science Foundation |
| Contributed Indexing: | Keywords: aromatic polyamide; fiber spinning; phase separation; polyacrylonitrile; polymer solutions; uniaxial extension |
| Entry Date(s): | Date Created: 20190410 Latest Revision: 20231006 |
| Update Code: | 20260130 |
| PubMed Central ID: | PMC6403789 |
| DOI: | 10.3390/polym10080856 |
| PMID: | 30960781 |
| Database: | MEDLINE |
Journal Article