The influence of dry-jet wet spinning parameters on the production of man-made cellulosic fibers from 13 wt % cellulose/
1,5-diazabicyclo[4.3.0]non-5-ene acetate solutions was investigated. The spinneret nozzle diameter, extrusion velocity, draw ratio,
and coagulation bath temperature were the studied parameters. The production of highly oriented fibers was favored by selecting
higher extrusion velocity and lower spinneret diameter. A spinneret size of 100 mm and a draw ratio of 6 were sufficient to highly orient
the cellulose macromolecules and achieve tenacities above 40 cN/tex (600 MPa). Total orientation assessed via birefringence measurement,
tenacity, and Young’s modulus values reached a plateau at a draw of 6 and no further development in properties was
observed. A temperature of the aqueous coagulation bath of 15 8C slightly promoted greater orientation of the fibers by hampering
structural changes of the cellulose macromolecules in the nascent solid fibers. Furthermore, the determination of the elongational viscosity
of the liquid thread via the measurement of radial force tensor was tested and showed promising results.