EFFECT OF THE DEGREE OF POLYMERIZATION OF CELLULOSE TRIACETATE ON THE PHYSICOMECHANICAL PROPERTIES OF YARNS.

The dependence of the relative breaking load and elongation at break of cellulose triacetate yarns and the resistance to abrasion and to repeat bending on specific viscosity of the polymer have been investigated. Experimental evidence indicates that on increase in specific viscosity from 0. 32 to 0. 41, the fiber strength rises from 9 to 11. 4 cN/tex; the resistance to bending, from 1200 to 2000 cycles; the resistance to abrasion, from 1000 to 8000 cycles. The elongation at break and resistance to repeat stretching change but little with increase in specific viscosity.