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

nanocellulose

cellulose nanofibrils

Författare

Oleksandr Nechyporchuk

Swerea IVF AB

Romain Bordes

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Teknisk ytkemi

Tobias Köhnke

Swerea IVF AB

ACS Applied Materials & Interfaces

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

Vol. 9 44 39069-39077

Ämneskategorier

Fysikalisk kemi

Styrkeområden

Building Futures

Fundament

Grundläggande vetenskaper

DOI

10.1021/acsami.7b13466