Wet Spinning of Flame-Retardant Cellulosic Fibers Supported by Interfacial Complexation of Cellulose Nanofibrils with Silica Nanoparticles
Artikel i vetenskaplig tidskrift, 2017

The inherent flammability of cellulosic fibers limits their use in some advanced applications. This work demonstrates for the first time the production of flame-retardant macroscopic fibers from wood-derived cellulose nanofibrils (CNF) and silica nanoparticles (SNP). The fibers are made by extrusion of aqueous suspensions of anionic CNF into a coagulation bath of cationic SNP at an acidic pH. As a result, the fibers with a CNF core and a SNP thin shell are produced through interfacial complexation. Silica-modified nanocellulose fibers with a diameter of ca. 15 ?m, a titer of ca. 3 dtex and a tenacity of ca. 13 cN tex-1 are shown. The flame retardancy of the fibers is demonstrated, which is attributed to the capacity of SNP to promote char forming and heat insulation on the fiber surface.

flame-retardant fibers

wet spinning

silica nanoparticles


cellulose nanofibrils


Oleksandr Nechyporchuk

Swerea IVF AB

Romain Bordes

Kemi och kemiteknik, Tillämpad kemi, Teknisk ytkemi

Tobias Köhnke

Swerea IVF AB

ACS Applied Materials & Interfaces

1944-8244 (ISSN) 1944-8252 (eISSN)

Vol. 9 39069-39077


Fysikalisk kemi


Building Futures


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