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Hierarchical Assembly of Nanocellulose‐Based Filaments by Interfacial Complexation
Author(s) -
Zhang Kaitao,
Liimatainen Henrikki
Publication year - 2018
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201801937
Subject(s) - nanocellulose , nanofiber , cellulose , cationic polymerization , materials science , chemical engineering , nanoparticle , carboxymethyl cellulose , aqueous solution , nanotechnology , fabrication , spinning , nanocrystal , polymer chemistry , transmission electron microscopy , chemistry , sodium , organic chemistry , medicine , alternative medicine , pathology , engineering , metallurgy
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.