教師資料查詢 | 類別: 會議論文 | 教師: 鄭廖平 CHENG, LIAO-PING (瀏覽個人網頁)

標題:Effects of bath temperature on the morphology and performance of EVOH membranes prepared by the cold solvent induced phase separation (CIPS) method
學年104
學期2
發表日期2016/07/26
作品名稱Effects of bath temperature on the morphology and performance of EVOH membranes prepared by the cold solvent induced phase separation (CIPS) method
作品名稱(其他語言)
著者Zi-Min Lin; Yu-Hsuan Wu; Liao-Ping Cheng
作品所屬單位
出版者
會議名稱The 10th conference of aseanian membrane society (AMS10)
會議地點Nara, Japan
摘要The development and characteristics of porous EVOH membranes by cold-solvent induced phase separation (CIPS) process were investigated. Binary dopes of 1,3-propandiol/EVOH prepared at 80 °C were immersed in 1,3-propandiol at a lower temperature to engender polymer precipitation. The quench temperature affects phase separation modes, and hence structure and performance of resulting CIPS membranes. When the bath temperature was set below the crystallization line and above the binodal (e.g. 45 °C), the formed membrane was dominated by a packing of semicrystalline EVOH globules. When the bath was set at a temperature just below the spinodal (e.g. 20 °C), spinodal decomposition (SD) dominated the precipitation process to give a lacy-like bicontinuous structure; yet there is also a clear imprint from polymer crystallization. When the bath temperature was set deeply within the spinodal dome (e.g. 5 °C), polymer crystallization affected only little the SD-derived bicontinuous morphology. Water permeation flux, wettability, tensile strength, and ultra-filtration experiments of the membranes were conducted. The results indicated that those properties were closely correlated with the porosity level, pore size, and membrane morphology. Moreover, X-ray diffraction and DSC analyses indicated that the formed membranes had a crystallinity of 38 to 42%, consistent with the literature data.
關鍵字
語言英文
收錄於
會議性質國際
校內研討會地點
研討會時間20160726~20160729
通訊作者
國別日本
公開徵稿
出版型式
出處The 10th conference of aseanian membrane society
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