University of Oulu

K. Zhang, H. Liimatainen, Small 2018, 14, 1801937.

Hierarchical assembly of nanocellulose‐based filaments by interfacial complexation

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Author: Zhang, Kaitao1; Liimatainen, Henrikki1
Organizations: 1Fiber and Particle Engineering Research Unit, University of Oulu
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 1 MB)
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Language: English
Published: John Wiley & Sons, 2018
Publish Date: 2019-08-27


In the present study, interfacial complexation spinning of oppositely charged cellulose‐materials is applied to fabricate hierarchical and continuous nanocellulose based filaments under aqueous conditions by using cationic cellulose nanocrystals with different anionic celluloses including soluble sodium carboxymethyl cellulose and insoluble 2,2,6,6‐tetramethylpiperidinyl‐1‐oxy radical‐oxidized cellulose nanofibers and dicarboxylated cellulose nanocrystals (DC‐CNC). The morphologies of the wet and dry nanocellulose based filaments are further investigated by optical and electron microscopy. All fabricated continuous nanocellulose based filaments display a hierarchical structure similar to the natural cellulose fibers in plant cells. As far as it is known, this is not only the first report about the fabrication of nanocellulose based filaments by interfacial complexation of cationic CNCs with anionic celluloses but also the first demonstration of fabricating continuous fibers directly from oppositely charged nanoparticles by interfacial nanoparticle complexation (INC). This INC approach may provide a new route to design continuous filaments from many other oppositely charged nanoparticles with tailored characteristics.

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Series: Small
ISSN: 1613-6810
ISSN-E: 1613-6829
ISSN-L: 1613-6810
Volume: 14
Issue: 38
Article number: 1801937
DOI: 10.1002/smll.201801937
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
221 Nanotechnology
Funding: The authors acknowledge the support from the Academy of Finland project “Bionanochemicals” (No.24302311).
Academy of Finland Grant Number: 307086
Detailed Information: 307086 (Academy of Finland Funding decision)
Copyright information: This is the peer reviewed version of the following article: K. Zhang, H. Liimatainen, Small 2018, 14, 1801937., which has been published in final form at This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.