Characterization of polyamide 6/multilayer graphene nanoplatelet composite textile filaments obtained via in situ polymerization and melt spinning
| Autor: | Nataša Čelan Korošin, Ivan Jerman, Matic Šobak, Andrej Demšar, Mirjam Leskovšek, Marija Čolović, Nigel Van de Velde, Jelena Vasiljević, Gregor Žitko, Barbara Simončič |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Materials science
Polymers and Plastics polyamide 6 predenje iz taline Composite number flammability mechanical properties Article thermal stability law.invention poliamid 6 lcsh:QD241-441 udc:677 Crystallinity lcsh:Organic chemistry termična stabilnost law tekstilna vlakna Fiber Composite material In situ polymerization in situ polimerizacija Nanocomposite Graphene graphene nanoplatelets in situ polymerization nanoploščice grafena General Chemistry mehanske lastnosti textile fibers melt spinning Polyamide Melt spinning gorljivost |
| Zdroj: | Polymers, vol. 12, no. 8, 1787, 2020. Polymers Volume 12 Issue 8 Polymers, Vol 12, Iss 1787, p 1787 (2020) |
| ISSN: | 2073-4360 |
| Popis: | Studies of the production of fiber-forming polyamide 6 (PA6)/graphene composite material and melt-spun textile fibers are scarce, but research to date reveals that achieving the high dispersion state of graphene is the main challenge to nanocomposite production. Considering the significant progress made in the industrial mass production of graphene nanoplatelets (GnPs), this study explored the feasibility of production of PA6/GnPs composite fibers using the commercially available few-layer GnPs. To this aim, the GnPs were pre-dispersed in molten &epsilon caprolactam at concentrations equal to 1 and 2 wt %, and incorporated into the PA6 matrix by the in situ water-catalyzed ring-opening polymerization of &epsilon caprolactam, which was followed by melt spinning. The results showed that the incorporated GnPs did not markedly influence the melting temperature of PA6 but affected the crystallization temperature, fiber bulk structure, crystallinity, and mechanical properties. Furthermore, GnPs increased the PA6 complex viscosity, which resulted in the need to adjust the parameters of melt spinning to enable continuous filament production. Although the incorporation of GnPs did not provide a reinforcing effect of PA6 fibers and reduced fiber tensile properties, the thermal stability of the PA6 fiber increased. The increased melt viscosity and graphene anti-dripping properties postponed melt dripping in the vertical flame spread test, which consequently prolonged burning within the samples. |
| Databáze: | OpenAIRE |
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