Journal Textile Coloration and Finishing Year / Vol., Issue, Month 2023 / V.35,no.1,Mar Title Influence of Cotton Pre-Treatment on Dyeing with Rubia cordifolia extracts for Cotton Authors Bum Hoon Lee Institution/Affiliations Shinhan University Pages/Total page pp.1 ~ 7 / 7 Language Korean Abstract In this study, the influence of pre-treatment(bleaching, mercerization by liquid ammonia and caustic soda) on cotton fabrics were investigated on dyeing Rubia cordifolia extracts. Aluminium Sulfate, Iron(Ⅱ) Sulfate Heptahydrate, Copper(Ⅱ) Sulfate Pentahydrate, Tin(Ⅱ) Sulfate, Manganese(Ⅱ) Chloride Tetrahydrate were used as mordanting agents. K/S value and washing fastnesses of the dyed cotton fabrics pretreated under different conditions were investigated. The K/S values were increased in the order of bleaching, liquid ammonia and mercerization pre-treatment. It was found that the pre-treatment conditions did not significantly affect the color change. The colorfastness to washing of most of all dyed fabrics were over grade 4 regardless of pre-treatment condition. Keywords Rubia cordifolia, natural dye, cotton knit fabric, liquid ammonia, dyeing property Download   Reference http://koreascience.or.kr/journal/OSGGBT.page