Continuous wet spinning of cellulose nanofibrils

New nanocellulose based materials have drawn much attention due to their great properties with low environmental impact. Cellulose nanofibrils (CNFs) have mechanical properties comparable to carbon fiber and steel, which can be enhanced by drawing during wet spinning of CNF. Grand challenges in nanocellulose processing have been identified that limit the potential for expanding nanocellulose usage in new composite materials. In this paper we present a prototype of a wet spinning line that uses dual bath-approach to produce coagulated and washed CNF filament that enables further research of wet spinning of CNF. This prototype enables easy control of crucial parameters involved in CNF wet spinning and it can be used with new, optimized parameters derived from future research. In this paper, we also identify an issue regarding CNF creeping that should be addressed in future research.