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The Membrane Society of Korea (한국막학회)
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Gas Permeation Characteristics by Chitosan/Pebax Composite Membranes

Chitosan/Pebax 복합 막에 의한 기체투과 특성

  • Kim, Sun Hee (Department of Industrial Chemistry, Sang Myung University) ;
  • Hong, Se Ryeong (College of General Studies, Sang Myung University)
  • Received : 2017.07.12
  • Accepted : 2017.08.23
  • Published : 2017.08.31
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Abstract

Chitosan/Pebax composite membranes were prepared with 1 : 1, 1 : 2, 1 : 10, 1 : 30 mass ratio of pebax and chitosan. Gas permeation test were carried out under pressure $6kgf/cm^2$, 35, $45^{\circ}C$ and $65^{\circ}C$ at different temperatures. The gas permeability and selectivity ($CO_2/N_2$) of $N_2$ and $CO_2$ for the Chitosan/Pebax composite membranes were investigated. As the amount of Pebax added to chitosan was increased the gas permeability of both $N_2$ and $CO_2$ increased. The selectivity ($CO_2/N_2$) was 6.9~44.3 in the Chitosan/Pebax composite membranes. With the increase of contents of Pebax and the decrease of temperature, the selectivity ($CO_2/N_2$) increased.

Chitosan과 Pebax[poly(ether-block-amide)의 mass ratio를 1 : 1, 1 : 2, 1 : 10, 1 : 30으로 하여 Chitosan/Pebax 복합 막을 제조하였다. 기체투과 실험은 압력 $6kgf/cm^2$ 하에서 35, 45, $65^{\circ}C$로 온도를 달리하여 진행되었고, Chitosan/Pebax 복합 막에 대한 $N_2$와 $CO_2$의 기체투과도와 선택도($CO_2/N_2$) 등을 조사하였다. $N_2$와 $CO_2$의 투과기체에 대해 Chitosan에 가해지는 Pebax의 함량이 증가할수록 $N_2$와 $CO_2$의 기체투과도는 모두 증가하였다. 선택도($CO_2/N_2$)는 Chitosan/Pebax 복합 막에서 6.9~44.3의 값을 가지며, Pebax의 함량이 증가할수록 그리고 온도가 낮을수록 큰 값을 보였다.

Keywords

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