Water permeation and solute separation through poly-L-leucine(PLL) membrane were investigated. L-leucine N-carboxy anhydride was polymerized homogeneously at 30℃ in benzene using triethylamine as an initiator. PLL membranes were prepared by dissolving polymer in benzene, and drying of a thin layer of the above solution on a mercury surface. From the measurement of the water permeability, water flux increased with increasing temperature and applied pressure. The activation energy calculated from the slope of Arrhenius plot of hydraulic permeability K_w was 6.64 kcal/mole. The solute rejection increases with increase of the molecular size of the solute. When PLL membranes were prepared a mercury surface, it was found that the membrane performance was improved in following conditions: solvent evaporation temperature 50-60℃, membrane thickness, 10μm: annealing temperature 60-90℃.

Poly-L-leucine막의 투수성 및 분리성능을 검토하였다. L-leucine NCA를 삼차아민인 triethylamine을 개시제로 벤젠 용매 중에서 30℃로 균일계 중합하여 Poly-L-leucine(PLL)을 얻었다. PLL의 벤젠용액을 수은면상에 유연하여 PLL막을 얻었다. 투수성측정결과 Water flux는 온도와 압력이 증가함에 따라 증가하였다. hydraulic permeability kw를 Arrhenius polt하여 그 기울기로부터 활성화에너지 값이 6.64Kcal/mole임을 알았다. 용질배제율은 용질입자 크기가 증가할수록 증가하였다. 또한 PLL막을 수은면상에서 제막할 때 용매증발온도는 50~60℃가 좋았으며 막두께는 10μm, 열처리온도는 60~90℃로 제막하는 것이 용질분리막으로 유리함을 알았다.

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