抄録
In our previous studies, it has been considered that, due to the colloidal semi-permeable membrane formed as the cuticle layer at the first step of viscose spinning, the alkali-acid mutual diffusion is controlled and the dehydration based on the osmotic effect is accelerated, resulting in the lowering of gel swelling, and the retardation of neutralization rate of spinning filaments are brought about.
In the present paper, the formation of the colloidal cuticle layer is confirmed by the microscopic observations of the cross sections of filaments at the course of spinning in the baths containing respectively ferrous, nickel and zinc ions.
