2004-02-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/712630摘要：在國科會及法國CNRS的資助下，本實驗室與法國的研究夥伴目前正在執行一個國際合作計畫，探討的主題是建立關於蒸氣誘導式相分離成膜機制的研究技術平台，本計畫是目前正在執行計畫的延伸，希望以雙方所發展的技術平台為基礎，來開發高分子膜的孔洞控制技術。計畫之構想是結合蒸氣誘導式相分離及濕式相轉換法來製備高分子膜，先將鑄膜液置於含非溶劑蒸氣的環境中來誘發相分離，一段時間之後，再將鑄膜液浸入凝聚槽中，以濕式法成膜。可以透過控制鑄膜液與蒸氣接觸的時間來控制膜結構，後續的濕式法除可進一步修整結構之外，亦可將蒸氣誘導式相分離常用的高沸點溶劑移除，可避免需長時間乾燥的問題。除發展製程外，亦會利用目前正在執行的國合計畫所發展的出的技術來對成膜過程中的結構變化及質傳行為加以觀察與分析：擬利用液態氮來固定成膜過程中鑄膜液在不同時間所生成的結構，在低溫下移除溶劑，並以SEM觀察其結構；以量測蒸氣誘導式相分離階段中鑄膜液重量的變化，並配合confocal Raman spectroscopy來量測濃度變化(由法方協助)，可以分析在此階段的質傳行為；再以FTIR/ATR microscope來分析在後續濕式相轉換過程中<br> Abstract: Under the support from NSC and CNRS, our French partner and we are now carrying out research on vapor-induced phase separation (VIPS). This proposal is an extension of this current research, trying to develop techniques to control membrane morphology on the basis of the studied VIPS. The idea is to combine the VIPS and the wet inversion method, to develop a hybrid membrane fabrication technique. The casting solution is exposed to nonsolvent vapor for a certain period of time to induce phase separation and then immersed in a nonsolvent bath to form a membrane. The membrane morphology can be controlled by adjusting the time period in the vapor. The subsequent wet inversion process could further modify the membrane morphology and could help to remove the high boiling-point solvent usually used in VIPS. Besides the development of membrane fabrication technique, we will also investigate the associated mass transfer and morphology evolution during membrane formation. The morphology evolution will be studied by examining the structure of the casting film with SEM, following a freezing and solvent removal process to fix the structure of the casting film during membrane formation. Gravimetric measurement and confocal Raman spectroscopy will be used to study the mass transport during the VIPS stage, with the help from our French partner. In addition, the exchange of solvent and nonsolvent during the stage of wet inversion will be investigated by using the FTIR/ATR microscopy, a technique developed in our laboratory.薄膜成型濕式相轉換非溶劑蒸氣FTIR顯微鏡結構控制membrane formationwet phase separationnonsolvent vaporFTIR microscopymorphology control