| 摘要 |
<p>The invention concerns cellulose formate fibre of liquid crystal origin with high breaking elongation and having the following features: a) under optical polarising microscope, its filaments have a ribbon structure characteristic of its liquid crystal origin; b) it verifies the following relationships: DS ≥ 2; Ar ≥ 8; Te < 45; Mi > 500; Er > 10, DS being the degree of substitution of cellulose in formate groups in the fibre (in %), Ar the fibre breaking elongation (in %), Te its toughness (in cN/tex), Mi its initial modulus (in cN/tex) and Er its energy at break (in J/g). The invention also concerns the method for obtaining this cellulose formate fibre by dry-jet-wet spinning of a cellulose formate liquid crystal solution, in which water is used as coagulant. The invention further concerns cellulose fibre reclaimed from cellulose formate having itself a high breaking elongation and the method for obtaining this fibre.</p> |
