Abstract
In PVC/PS pelyblend laminated membranes, perrneabilities were increased as increasing the blend ratio of PS and selectivities were increased with increasing the blend ratio of PVC. The gas permeation mechanism was shifted from the combination of Poiseuille and Knudsen flow model to the solution-diffusion model as decreasing the PS blend ratio. The structure of polyblend laminated membranes showed series model, where PS rich phase was formed at air side and PVC rich phase was at water side. The model of permeation in the polyblend laminated membranes also showed series model structure.
수면전개 혼합적층막의 기체투과계수는 PS의 혼합비율이 증가함에 따라, 분리계수는 PVC의 환합비율이 증가함에 따라 증가하였다. 기체투과기구는 PS의 혼합비율이 감소함에 따라 Poiseuile-Knudsen 모델에서 solution-diffusion모델로 전이하였다. 한편 혼합박막의 구조는 공기면측에 소수성의 PS가, 수면측에는 친수성인 PVC가 배향된 직렬혼합구조였으며, 기체투과거동은 series model을 따랐다.
