Extrusion
spinning was practical way for understand the behavior and thermal
stability of cellulose in Ca(SCN)2 salt hydrate melt as a spin
dope. With respect to processing washing and coagulation of filaments
and fibers is advantageous compared to monoliths, since
their small cross-sectional area allows faster washing and drying.
SEM images of monoliths show two hierarchical pore structures
with pore sizes ranging from 10 to 100 nm and fibril diameters
of around 10–25 nm. The morphology of cellulose aerogels prepared
as fibers made by micro-extrusion process is similar to the
monolith form