Abstract: The capillary effect , moisture absorption and liberation property of yarns blended with new green fibers such as pupa protein fiber, Rousi fibers,Tencel fiber, color cotton were studied in this paper. Their liquid wicking height and moisture absorption and libertation process were tested. The tested data were contrasted by using Origin software in order to find the more universal laws which have relation with the moisture absorption and liquid transfer property of yarns, and the tested results could provide evidence for developing green fabrics with good wet comfort. The results show that the yarns that blended with regenerated fibers have good capillary effect, especially the yarns blended with pupa protein fibers which are of skin-core strcture. The yarn blended 50% Rousi fibers has the best moisture absorption and liberation property. Its moisture regain and rate of absorption and liberation are all higher. The capillary effect of cotton/color cotton yarns are very poor and these two yarn have lower moisture regain and absorption and liberation rate.

Key words: environment friendly fiber, yarn, moisture absoption and liberation, capillary effect