Dyeing properties of wool yarns treated by ionic liquids

Dyeing properties of wool yarns treated by ionic liquids(ILs) Br, Br, Ac,andAc prepared in our lab were studied.The results show that dyeing rate of wool treated by ILs is increased to some degree,and under the same treatment conditions,equilibrium exhaustion of wool treated byAc reaches 93.95%,while equilibrium exhaustion of wool untreated reaches only 78.9%.The wool yarns treated byAc have good low temperature dyeing property(dyed at 70 ℃).After treating with ILs,higher the dyeing rate of the wool yarns,more serious the strength loss of the yarn is;however,treatment with ILs has little influence on color fastness.SEM shows that after treating with ILs that contain various combinations of cationic and anionic ions,the scale of the wool fiber shows to be removed to some extent,among them,Ac exhibits the best result in this respect.