University of Oulu

Tuukka Nissilä, Sakari S. Karhula, Simo Saarakkala, Kristiina Oksman, Cellulose nanofiber aerogels impregnated with bio-based epoxy using vacuum infusion: Structure, orientation and mechanical properties, Composites Science and Technology, Volume 155, 2018, Pages 64-71, ISSN 0266-3538,

Cellulose nanofiber aerogels impregnated with bio-based epoxy using vacuum infusion : structure, orientation and mechanical properties

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Author: Nissilä, Tuukka1; Karhula, Sakari S.2,3; Saarakkala, Simo2,4,5;
Organizations: 1Fibre and Particle Engineering Research Unit, Faculty of Technology, University of Oulu, FI-90014 Oulu, Finland
2Research Unit of Medical Imaging, Physics and Technology, University of Oulu, FI-90014 Oulu, Finland
3Infotech, Univesity of Oulu, FI-90014 Oulu, Finland
4Medical Research Center, University of Oulu, FI-90014 Oulu, Finland
5Department of Diagnostic Radiology, Oulu University Hospital, Oulu, Finland
6Division of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, SE-97187 Luleå, Sweden
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 2.4 MB)
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Language: English
Published: Elsevier, 2018
Publish Date: 2018-01-11


Cellulose nanofiber aerogels were used as preforms that were impregnated with a bio-epoxy resin via a widely used vacuum infusion process. The simple and straightforward nanocomposite processing approach resulted in an almost 70% improvement in the storage modulus of the polymer with only an 11.7 wt% cellulose nanofiber content. The nanofibers were well dispersed in the polymer matrix and the fiber structures were anisotropically aligned. The impregnation time of the aerogels was also significantly lower than that of the more commonly used nanopapers. It was thus shown that environmentally friendly and mechanically robust nanocomposites could be produced by impregnating cellulose nanofiber aerogels with a thermosetting resin using a processing approach that has potential to be scaled up for commercial use.

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Series: Composites science and technology
ISSN: 0266-3538
ISSN-E: 1879-1050
ISSN-L: 0266-3538
Volume: 155
Pages: 64 - 71
DOI: 10.1016/j.compscitech.2017.12.001
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
221 Nanotechnology
Funding: The authors acknowledge TEKES FiDiPro Programme, European Research Council under the European Union's Seventh Framework Programme (FP/2007-2013, ERC Grant Agreement no. 336267) and the Academy of Finland (grant no. 268378) for the financial support.
EU Grant Number: (336267) 3D-OA-HISTO - Development of 3D Histopathological Grading of Osteoarthritis
Academy of Finland Grant Number: 268378
Detailed Information: 268378 (Academy of Finland Funding decision)
Dataset Reference: Data will be made available on request.
Copyright information: © 2018 This manuscript version is made available under the CC-BY-NC-ND 4.0 license