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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/32632

    標題: Microstructural characterization and evaluation of pervaporation performance of thin-film composite membranes fabricated through interfacial polymerization on hydrolyzed polyacrylonitrile substrate
    作者: An, Quan-Fu
    Ang, Micah Belle Marie Yap
    Huang, Yun-Hsuan
    Huang, Shu-Hsien
    Chia, Yu-Hsuan
    Cheng-Lee Lai(賴振立)
    Tsai, Hui-An
    Hun, Wei-Song
    Hu, Chien-Chieh
    Wu, Yo-Ping
    Lee, Kueir-Rarn
    貢獻者: Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Green Catalysis & Separat
    Chung Yuan Christian Univ, R&D Ctr Membrane Technol, Dept Chem Engn
    Natl Ilan Univ, Dept Chem & Mat Engn
    Univ Arkansas, Dept Chem Engn, Fayetteville
    Chia Nan Univ Pharm & Sci, Dept Environm Engn & Sci
    Natl Taiwan Univ Sci & Technol, Grad Inst Appl Sci & Technol
    關鍵字: Polyamide
    TFC membrane
    Interfacial polymerization
    Ethanol dehydration
    Positron annihilation lifetime spectroscopy
    日期: 2019-08
    上傳時間: 2020-07-29 13:52:59 (UTC+8)
    摘要: A series of thin-film composite (TFC) polyamide membranes was fabricated through interfacial polymerization on a modified polyacrylonitrile (mPAN) substrate, where an aqueous solution of diamine was reacted with an organic solution of diacyl chloride. Various monomers were used: two different diamines [1,3-diamino-2-propanol (DAPL) and hydrazine] and two different diacyl chlorides [succinyl chloride (SCC) and trans-5-norbornene-2,3-dicarbonyl chloride]. Combining these monomers resulted in a new polyamide layer. We investigated the effect of the monomer chemical structure and interfacial polymerization conditions on the membrane pervaporation performance in dehydrating an aqueous solution of ethanol. According to field emission scanning electron microscopy, DAPL-SCC provided the thinnest polyamide layer, which was also confirmed through positron annihilation lifetime spectroscopy. The results were used to correlate the variation in the membrane microstructure with the pervaporation performance of the fabricated TFC polyamide membranes. Both microstructural characteristics and surface properties affected the pervaporation performance. DAPL-SCC/mPAN membranes with lower free-volume sizes and suitable hydrophilicity were evaluated to deliver the highest water concentration in permeate and the lowest permeation flux (on the basis of the pervaporative dehydration of an aqueous solution of 90 wt% ethanol at 25 degrees C).
    關聯: Journal of Membrane Science, v.583, pp.31-39
    Appears in Collections:[環境工程與科學系(所)] 期刊論文

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