Hierarchical Assembly of Nanocellulose-Based Filaments by Interfacial Complexation

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Kaitao Zhang, Henrikki Liimatainen

Abstract

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.

References

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Citations

Aug 25, 2020·Advanced Materials·Tomas RosénL Daniel Söderberg
Jan 24, 2021·Carbohydrate Polymers·Marcos MarianoJuliana S Bernardes
Aug 25, 2020·Carbohydrate Polymers·Elina Niinivaara, Emily D Cranston
May 18, 2021·Bioactive Materials·Kamil ElkhouryElmira Arab-Tehrany
Jun 16, 2021·Nano Letters·Senping LiuChao Gao

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