The extrusion of a cuprammonium cellulose solution into the rotational flow field of a disodium dihydrogen ethylenediaminetetraacetate solution led to the formation of the nonwoven fabrics of regenerated cellulose fibers around a rotor. Morphological and structural features of the products were examined by polarized optical microscopy, scanning electron microscopy, and wide-angle X-ray diffraction photography. It was revealed that the constituent fibers have a distinct skin-core structure. The crystal modification of the fibers was cellulose II. The degree of the chain orientation of the fibers was increased with increasing the draft ratio, with the birefringences of 0.012 to 0.028, which were nearly situated in the same range as those of cuprammonium rayon fibers. The concentrations of the residual copper in the present fabrics were satisfactorily low.
ASJC Scopus subject areas
- Chemical Engineering (miscellaneous)
- Materials Science (miscellaneous)
- Polymers and Plastics
- Industrial and Manufacturing Engineering