ビスコースの凝固機構

特に脱水収縮に伴なうcompressionによる配向効果について

抄録

Optical behaviours of cross sections of model “fresh” cellulose filaments, coagulated freely with various compositions of the bath, were examined with a polarizing microscope and the orienting effects of compression caused by shrinkage during coagulation are discussed.
The orienting effects of compression are distinctly dependent on the composition of the coagulating bath and, consequently, on the course of coagulation. The more strongly gelatination takes place before regeneration, the less the orienting effect show up. Then the orienting of compression is exhibited more remarkably in the β-type coagulation, such as those by Na⁺ or H⁺, than in the α-type coagulation, such as that by Zn⁺⁺. When the multilayer structure consistedy of the alternative succession of α-and β-layers is formed by the bath similar to Müller bath, the radial gradient in orientation shows an intermittent distribution.