University of Oulu

Berglund, L., Forsberg, F., Jonoobi, M., Oksman, K. (2018) Promoted hydrogel formation of lignin-containing arabinoxylan aerogel using cellulose nanofibers as a functional biomaterial. RSC Advances, 8 (67), 38219-38228. doi:10.1039/C8RA08166B

Promoted hydrogel formation of lignin-containing arabinoxylan aerogel using cellulose nanofibers as a functional biomaterial

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Author: Berglund, Linn1; Forsberg, Fredrik2; Jonoobi, Mehdi3,1;
Organizations: 1Division of Materials Science, Luleå University of Technology, Luleå, Sweden
2Division of Fluid and Experimental Mechanics, Luleå University of Technology, Luleå, Sweden
3Department of Wood and Paper Science and Technology, Faculty of Natural Resources, University of Tehran, Karaj, Iran
4Fibre and Particle Engineering, University of Oulu, Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.8 MB)
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Language: English
Published: Royal Society of Chemistry, 2018
Publish Date: 2019-03-05


In this work, three-dimensional (3D) aerogels and hydrogels based on lignin-containing arabinoxylan (AX) and cellulose nanofibers (CNF) were prepared. The effects of the CNF and the crosslinking with citric acid (CA) of various contents (1, 3, 5 wt%) were evaluated. All the aerogels possessed highly porous (above 98%) and lightweight structures. The AX-CNF hydrogel with a CA content of 1 wt% revealed a favorable network structure with respect to the swelling ratio; nanofiber addition resulted in a five-fold increase in the degree of swelling (68 g of water per g). The compressive properties were improved when the higher CA content (5 wt%) was used; when combined with CNF, there was a seven-fold enhancement in the compressive strength. The AX-CNF hydrogels were prepared using a green and straightforward method that utilizes sustainable resources efficiently. Therefore, such natural hydrogels could find application potential, for example in the field of soft tissue engineering.

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Series: RSC advances
ISSN: 2046-2069
ISSN-E: 2046-2069
ISSN-L: 2046-2069
Volume: 8
Issue: 67
Pages: 38219 - 38228
DOI: 10.1039/C8RA08166B
Type of Publication: A1 Journal article – refereed
Field of Science: 221 Nanotechnology
116 Chemical sciences
215 Chemical engineering
Funding: This work was supported by Bio4Energy, a strategic research environment appointed by the Swedish government and WOOD-PRO – the Nordic Forest Research Co-operation Committee (SNS) project.
Copyright information: This journal is © The Royal Society of Chemistry 2018. Open Access Article. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.