絹에 대한 反應性染料의 平衡論的 硏究 = A study on the Equilibrium sorption of Silk fibroin by Reactive dye

다국어 초록 (Multilingual Abstract)

The equilibrium sorptions of C.I. Reactive Blue 19 and C.I. Reactive Blue 19 and C.I. Acid Blue 138 on Silk fibroin were investigated in the range of 50°C, 70°C, 90°C and to the pH range from 2.0 to 10.5. The results obtained are summarized as follows:
1) The amount of sorption of reactive dye was increased with the decrease of pH in dyeing solution and temperature. The amount of fixation showed the maximum value to pH 8.5 and 70°C.
2) In acidic region, the sorption behavior of acid dye was similar to that of reactive dye, and Langmuir adsorption constant was increased with the decrease of pH.
3) Langmuir constant of both dyes was decreased with the increase of temperature, while standard affinity was increased.
4) The reaction of both dyes was exothermic and the values of ΔS° were positive.
5) It was found that the sorption behavior of dyes against Silk fibroin could be described as Langmuir adsorption and Nernst distribution in lower pH region.