Textile Coloration and Finishing (한국염색가공학회지)

The Korean Society of Dyers and Finishers (한국염색가공학회)
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Studies on Silk Fibroin Membranes(III) ―Permselectivity of Alkali Metal Chlorides through Silk Fibroin Membrane―

Silk Fibroin 막에 관한 연구(III) ―Silk Fibroin 막의 Alkali Metal Ion선택투과성―

  • Choi, Hae Wook (Department of Silk Textiles, College of Engineering, Miryang National University, Miryang, 627-130, Korea) ;
  • Sung, Woo Kyung (Dept. of Textile Engineering, Kungpook Sanup University, Daegu, 701-702, Korea) ;
  • Park, Soo Min (Dept. of Textile Engin., College of Engin., Pusan National Univ., Pusan, 609-735, Korea) ;
  • Kim, Kyung Hwan (Dept. of Textile Engin., College of Engin., Pusan National Univ., Pusan, 609-735, Korea)
  • Published : 1994.12.01
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Abstract

The permselectivity of alkali metal chlorides through silk fibroin membrane was investigated at $25^{\circ}C$: The Permeability coefficients were found to increase in a sequence of LiCl < NaCl < KCl < CsCl. This sequence was explained by considering the partition and the hydrophilic membrane. The dependence of the permeability on the salts concentration was interpreted by means of TMS theory. The ionic mobility ratio of alkali metal chlorides through this membrane decreased with the increase of the Stokes radius. The Effectiveness of the charged density was found to depend on the ionic species. The greater the Stokes radius the larger the effective charge density of membrane.

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