A cationizing agent was used for increasing the color yield, in terms of the Kubelka-Munk values (color strength, K/S).Cotton fabrics were dyed using the extract of waste marigold and rose.This work was to study the optimum of time, temperature and concentration in cationizing process on dyed cotton.The K/S and color values (L*, a*, b*) were measured to discover the suitable condition from color value and color strength estimation, cotton fabric cationized with 10 g/L of cationizing-agent concentration for 30 minutes at the 50° C showed the highest K/S.In case of roses, the best condition is treated with cationizing-agent concentration of 15 g/L for 15 minutes at 50° C. The obtainable results revealed that the color strength of cationized cotton fabrics were increased when compared to K/S of untreated cotton up to 34.26% and 331.91% for marigold and rose dyes, respectively, and the obtainable color of cationized cotton fabrics were brighter as compared to the untreated cotton.
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Nutchawanit et al. (2019) studied this question.
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