The Permeability of Solutes Through Wool-Keratin Derivatives Membranes

양모-케라틴 유도체 막의 용질 투과성

  • 최창남 (전남대학교 섬유공학과) ;
  • 윤보선 (전남대학교 섬유공학과, 한국섬유기술연구소, 전남대학교 섬유공학과, 전북대학교 섬유공학과)
  • Published : 1994.04.01

Abstract

S-cyanoethylated wool keratin(SCEK) was prepared by the reaction with the reduced wool fiber and acrylonitrile at pH 9.5 and pH 8.0. It was found that SCEK prepared at pH 9.5 was cyanoethylated more than that prepared at pH 8.0 from the results analyzed by FT-lR spectrometry and DSC. The transport phenomena of solutes(urea, creatinine. tryptophane. and glucose) through SCEK membranes were investigated in the temperature range of 20~4$0^{\circ}C$. Permeability dependence on solute size through the SCEK membranes decreased as molecular size increased. And that of SCEK prepared at pH 8.0 was more permeable than SCEK prepared at pH 9.5. Permeability of the similar molecules was depended more as molecular weight decreased. The effect of temperature of SCEK prepared at pH 8.0 was higher than that prepared at pH 9.5. The membrane prepared at pH 5.0 is mainly controlled by the solution-diffusion perkleatiot mechanism and that prepared at pH 9.5 is mainly controlled by the pore-type permeation mechanism. The above explanation was based upon the facts that the membrane prepared at pH 8.0 showed more temperature dependence and non-proportional relationship between the molecular weight and the permeability comparing with the membrane prepared at pH 9.5.

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