20.500.12556/RUL-134354 Characterization of polyamide 6/multilayer graphene nanoplatelet composite textile filaments obtained via in situ polymerization and melt spinning 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 ε-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 ε-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. polyamide 6 graphene nanoplatelets in situ polymerization melt spinning textile fibers mechanical properties thermal stability flammability poliamid 6 nanoploščice grafena in situ polimerizacija predenje iz taline tekstilna vlakna mehanske lastnosti termična stabilnost gorljivost true false true Angleški jezik Slovenski jezik Članek v reviji 2022-01-10 14:16:43 2022-01-10 14:16:46 2022-09-13 03:54:41 0000-00-00 00:00:00 2020 0 0 19 str. iss. 8, art. 1787 Vol. 12 10 Aug. 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 677 2073-4360 10.3390/polym12081787 24970755 RAZ_Vasiljevic_Jelena_2020.pdf RAZ_Vasiljevic_Jelena_2020.pdf 1 3D80D371620D233A278D535B1327E70A 91c89f17178e2b77399947066fc384585b53032cc1e35cb3d7269a737529042a ba64a33c-7217-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=152759 https://www.mdpi.com/2073-4360/12/8/1787 1 6295a3a3-7217-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=152758 Naravoslovnotehniška fakulteta Fakulteta za kemijo in kemijsko tehnologijo 0 0 0