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題 名 | Preparation and Characterization of Block Copolymers of Ethylene Oxide and Butylene Oxide=環氧乙烯/環氧丁烯嵌段共聚物之合成及鑑定 |
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作 者 | 楊遠威; 葛明德; | 書刊名 | 界面科學會誌 |
卷 期 | 20:1 1997.04[民86.04] |
頁 次 | 頁67-80 |
分類號 | 346.84 |
關鍵詞 | 環氧乙烯; 環氧丁烯; 嵌段共聚物; 陰離子聚合反應; Ethylene oxide; Butylene oxide; Block copolymers; Anionic polymerization; |
語 文 | 英文(English) |
中文摘要 | 本文以次序陰離子聚合法合成分子量(Mn 2500 g mol)及組成(80莫耳-%環氧乙烯)相近,但結構不同的環氧乙烯╱環氧丁烯雙嵌段及三嵌段共聚物,並以膠體滲透層析(GPC) 及�C C 核磁共振儀(�CNMR)鑑定其結構。GPC圖譜顯示共聚物分子量分佈狹窄(Mw/Mn < 1.1),而�C C NMR圖譜則顯示在聚合時無轉移反應發生。 |
英文摘要 | Three copolymers of ethylene oxide (EO) and 1,2 butylene oxide (BO) were prepared by sequential anionic polymerisation to have similar molar masses(Mn 2500 gmol) and composition (80 mol- % oxyethylene), but different chain structures. The copolymers were characterized by gel permeation chromatography (GPC) and �CC NMR spectroscopy. The molar mass distributions were found to be narrow (Mw/Mn < 1.1) by GPC, and no evidence of transfer reation by �CC NMR spectrosccopy. |
本系統中英文摘要資訊取自各篇刊載內容。