Stress relaxation in filamentous materials : The effect of humidity, temperature and strain on man-made fibres and silk

The relaxation of tension in strained filaments of Terylene, Perlon, Grilon, nylon 66, nylon 610, polyethylene, polypropylene and silk has been studied at strains up to 4% extension, at constant relative humidity of 65% and with humidity fluctuating between 35% and 90% r.h., and at constant humidity with the temperature varied from 2