Methyl cellulose/cellulose nanocrystal nanocomposite fibers with high ductility
| Autor: | Hynninen, V., Mohammadi, P., Wagermaier, W., Hietala, S., Linder, M. B., Ikkala, O., Nonappa |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | European Polymer Journal 112 (2019) 334-345 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.eurpolymj.2018.12.035 |
| Popis: | Methylcellulose/cellulose nanocrystal (MC/CNC) nanocomposite fibers showing high ductility and high modulus of toughness were prepared by a simple aqueous wet-spinning from corresponding nanocomposite hydrogels into ethanol coagulation bath followed by drying. The hydrogel MC aq. concentration was maintained at 1 wt-% while the CNC aq. loading was systematically varied in the range 0 - 3 wt-%. This approach resulted in MC/CNC fiber compositions from 25/75 wt-%/wt-% to 95/5 wt-%/wt-%. The optimal mechanical properties were achieved with the MC/CNC composition of 80/20 wt-%/wt-% allowing high strain (36.1 %) and modulus of toughness (48.3 MJ/m^3), still keeping a high strength (190 MPa). Further, we demonstrate that the continuous spinning of MC/CNC fibers is potentially possible. The results indicate possibilities to spin MC-based highly ductile composite fibers from environmentally benign aqueous solvents. Comment: 1 scheme, 7 figures, 1 table |
| Databáze: | arXiv |
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