Abstract
The formation of the structure during the spinning process of a fibre spun from a solution of cellulose in N-methylmorpholine-N-oxide (NMMO) has been studied. The diameter and birefringence of aspinning monofilament were traced through the air gap that is used in the process. The effects of the spinneret diameter and the draw ratio on the structure evolution have been studied. The influence of the draw ratio on the fibrillation tendency of the fibre has also been evaluated. It is shown that the NMMO process is rather robust with respect to the tensile properties of the resulting fibres, but it is still possible to vary the amount of fibrillation.
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