Silk Fibroin 막에 관한 연구 (II) -Silk Fibroin 막에 대한 산성염료의 흡착-

Studies on Silk Fibroin Membranes(II) -Adsorption of Acid Dyes in Silk Fibroin Memberane-

  • 최해욱 (밀양산업대학교 이공학부 견섬유학과) ;
  • 박수민 (부산대학교 공과대학 섬유공학과) ;
  • 김경환 (부산대학교 공과대학 섬유공학과)
  • 발행 : 1994.09.01

초록

With the view of studying on the dual adsorption mechanism of acid dyes in connection with the structural difference of silk fibroin, silk fiber and silk fibroin memberane were used for equilibrium dyeing at $60^{\circ}C$, $70^{\circ}C$, $80^{\circ}C$ and pH 3.2, pH 5.0. The dyes used were C.I.Acid Orange 7 and C.I.Acid Red 88 introduced aromatic hydrocabon into Acid Orange 7. From the adsorption isotherm experiment, the total uptake of dyes can be described by Langmuir sorption and Nernst partition. Nernst partition. Nernst partition coefficient $K_1$ decrease of crystalline regions and orientation. The saturation value S of Acid Red 88 were large than total amino group contents and it was attributed it hydrophobic bond. On the other hand, the standard afficity and enthalpy were increased with the in crease of hydrophobic part of dyes. Both $k_1$ and $K_2$ were decreased with the increase of pH, but $k_2$ were more effected than $K_1$.

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