基于棉纤维非反应型改性的天然染料染色技术研究

iming at the problems of low dye-uptake and poor color fastness of natural dyes on cotton fiber, the technology of non-reactive modification on cotton was studied. The influences on K/S value among modifier type, modifier concentration, treating temperature, treating pH value and treating time were discussed. The physical mechanical properties of cotton before and after modification, level dyeing property and color fastness were also analyzed. The results demonstrated that the cationized cotton fabrics still remained good whiteness, strength and absorbent quality. The dyed cotton with natural dyes had obvious improvement in K/S value, better level dyeing property, as well as color fastness.