Non-reactive modification on cotton and its application in natural dyeing

Aiming at the problems of low dye-uptake and poor color fastness of natural dyes on cotton,the technology of non-reactive modification on cotton was studied.The influences of modifier type,modifier concentration,treating temperature,treating pH value and treating time on K /S value in dyeing of modified cotton were discussed.The mechanical properties,levelness,and color fastness of the cotton before and after modification were analyzed.The results demonstrated that the modified cotton fabrics still kept good whiteness,strength and absorbent quality.When dyed with natural dyes,it showed obvious improvement in K /S value,good levelness and color fastness.