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

Romain Bordes

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Tobias Köhnke

Swerea

ACS Applied Materials & Interfaces

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

Vol. 9 44 39069-39077

Ämneskategorier

Fysikalisk kemi

Styrkeområden

Building Futures (2010-2018)

Fundament

Grundläggande vetenskaper

DOI

10.1021/acsami.7b13466

Mer information

Senast uppdaterat

2018-02-28