University of Oulu

Siqueira, G., Oksman, K., Tadokoro, S., Mathew, A. (2016) Re-dispersible carrot nanofibers with high mechanical properties and reinforcing capacity for use in composite materials. Composites Science and Technology, 123, 49-56. doi:10.1016/j.compscitech.2015.12.001

Re-dispersible carrot nanofibers with high mechanical properties and reinforcing capacity for use in composite materials

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Author: Siqueira, Gilberto1,2; Oksman, Kristiina1,3; Tadokoro, Sandra K.1;
Organizations: 1Division of Materials Science, Composite Centre Sweden, Luleå University of Technology, Luleå, Sweden
2Applied Wood Materials Laboratory, Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
3University of Oulu, Fibre and Particle Engineering, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 7.3 MB)
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Language: English
Published: Elsevier, 2016
Publish Date: 2019-03-06


The separation of nanofibers from carrot juice residue and their reinforcing potential is demonstrated. Morphological properties, X-ray diffraction (XRD), and specific surface area (SSA) measurements showed that carrot nanofibers (CNF) have maintained the crystalline structure of native cellulose, while presenting a SSA as high as 246 m²·g⁻¹ and diameters between 3 and 36 nm. CNF could be redispersed in water after drying, giving nanofibers with SSA and diameter comparable to properties of initial never-dried CNF. Finally, we propose possible uses of CNF either as strong nanopaper with excellent mechanical properties, i.e. modulus of 13.3 GPa and strength of 175 MPa, or as reinforcing phase in polymer matrices (CAB). Interesting properties of carrot nanofibers in terms of their possible transport and use from the dry state, as well as their remarkable mechanical properties afforded to nanopaper and nanocomposites may promote their use in environmentally benign constituent in industrial applications.

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Series: Composites science and technology
ISSN: 0266-3538
ISSN-E: 1879-1050
ISSN-L: 0266-3538
Volume: 123
Pages: 49 - 56
DOI: 10.1016/j.compscitech.2015.12.001
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
221 Nanotechnology
Funding: The authors would like to thank the Kempe Foundations, Sweden for Gilberto Siqueira and Sandra K. Tadokoro scholarships and financial support.
Copyright information: © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license