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Dry-Spun Single-Filament Fibers Comprising Solely Cellulose Nanofibers from Bioresidue
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0002-6702-4627
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0002-2388-3358
PANalytical.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-8909-3554
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2015 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 7, no 23, p. 13022-13028Article in journal (Refereed) Published
Abstract [en]

We demonstrated that low-cost and environmentally friendly filaments of native cellulose can be prepared by dry spinning an aqueous suspension of cellulose nanofibers (CNF). The CNF were extracted from banana rachis, a bioresidue from banana cultivation. The relationship between spinning rate, CNF concentration, and the mechanical properties of the filaments were investigated and the results showed that the modulus of the filaments was increased from 7.8 to 12.6 GPa and the strength increased from 131 to 222 MPa when the lowest concentration and highest speed was used. This improvement is believed to be due to an increased orientation of the CNF in the filament. A minimum concentration of 6.5 wt % was required for continuous filament spinning using the current setup. However, this relatively high concentration is thought to limit the orientation of the CNF in the filament. The process used in this study has a good potential for upscaling providing a continuous filament production with well-controlled speed, but further work is required to increase the orientation and subsequently the mechanical properties.

Place, publisher, year, edition, pages
2015. Vol. 7, no 23, p. 13022-13028
National Category
Bio Materials
Research subject
Wood and Bionanocomposites
Identifiers
URN: urn:nbn:se:ltu:diva-4989DOI: 10.1021/acsami.5b03091ISI: 000356753500082PubMedID: 26017287Scopus ID: 2-s2.0-84935018487Local ID: 300d2d07-e9a6-4a48-abb5-c98754d8d41cOAI: oai:DiVA.org:ltu-4989DiVA, id: diva2:977863
Note
Validerad; 2015; Nivå 2; 20140929 (salhoo)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Hooshmand, SalehAitomäki, YvonneMathew, Aji P.Oksman, Kristiina

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