Frictional and mechanical properties of mercerized ring- and rotor-spun yarns

Abstract

The response of cotton ring- and rotor-spun yarns to mercerization treatment has been investigated. It is observed that the caustic mercerization causes major changes in the mechanical and frictional behaviour of yarns, though the magnitudes of changes are different for different ring- and rotor-yarns, depending on the process parameters used. Both mercerized ring and rotor yarn s display higher knot and loop strength and lower extensibility, elastic recovery and surface friction than the corresponding unmercerized yarns. Mercerization is an effective means of reducing hairiness and twist liveliness of both types of yarn.