頁籤選單縮合
題名 | Synthesis of Propylene Diblock Copolymers via Metallocene and Borane Chemistry |
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作者 | 江彰吉; 胡志明; 李曉芳; 徐旻聰; | 書刊名 | Journal of the Chinese Chemical Society |
卷期 | 47:3 2000.06[民89.06] |
頁次 | 頁547-554 |
分類號 | 346.84 |
關鍵詞 | Metallocene; Polypropylene; Diblock copolymer; Borane; Ring-opening; |
語文 | 英文(English) |
英文摘要 | An isotactic chain end unsaturated polypropylene was prepared by the homogeneous metallocene catalyst Et(Ind)2ZrCl2 with MAO. Herein, the chain end unsaturated polypropylene proceeded the hydroboration reaction to prepare borane-containing polypropylene. The borane-containing polypropylene could be transformed to hydroxyl-terminated polypropylene, PPOH. And then the polypropylene-nylon 6 diblock copolymer, PP-b-NY6, was synthesized from telechelic PPOH by converting this prepolymer with toluene diisocyanate and using the resulting materials as macroactivators for anionic caprolactam polymerization. Meanwhile, this investigation used borane-containing polypropylene and oxygen to produce free radicals at the chain end on the polypropylene. Experimental results indicate that the free radical is an effective initiator for the polymerization of methyl methacrylate to produce diblock PP-b-PMMA. The block copolymers are characterized by IR, NMR, and DSC analyses. The diblock copolymer is a good compatibilizer for polymer blends. |
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