| 三氟化硼引发四氢呋喃聚合的研究——Ⅲ.以环氧丙烷为促进剂 |
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| 引用本文： | 张鸿志,张书杰,冯新德.三氟化硼引发四氢呋喃聚合的研究——Ⅲ.以环氧丙烷为促进剂[J].高分子学报,1988,0(4):313-316. |
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| 作者姓名： | 张鸿志 张书杰 冯新德 |
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| 作者单位： | 北京大学化学系 北京
(张鸿志，张书杰)，北京大学化学系 北京(冯新德) |
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| 摘 要： | <正> 在前报中已证明当用三氟化硼引发四氢呋喃(THF)聚合时,以环氧氯丙烷(ECH)为促进剂效果远较用环氧乙烷(EO)的效果好,在相近的浓度条件下,前者引发效率约为后者的2.5—6倍.本文将进一步对以环氧丙烷(PO)为促进剂的聚合反应进行研究。通过对产物组成与结构的测定,加深了对反应的了解。
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| 关 键 词： | 正离子聚合 开环聚合 四氢呋喃 聚丁二醇 丁二醇-丙二醇共聚醚 三氟化硼-乙醚 环氧丙烷为聚合促进剂 |
| 收稿时间： | 1987-09-26 |
POLYMERIZATION OF TETRAH YDROFURAN BY BORON TRIFLUORIDE INITIATOR III. Using Propylene Oxide as the Promotor |
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| ZHANG Hong-zhi,ZHANG Shu-jie,FENG Xin-de.POLYMERIZATION OF TETRAH YDROFURAN BY BORON TRIFLUORIDE INITIATOR III. Using Propylene Oxide as the Promotor[J].Acta Polymerica Sinica,1988,0(4):313-316. |
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| Authors: | ZHANG Hong-zhi ZHANG Shu-jie FENG Xin-de |
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| Institution: | Department of Chemistry; Peking University; Beijing |
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| Abstract: | The initiator efficiency (If) in the polymerization initiated by BF3-epichlorohydrin is about 2-4 times higher than that by BF3-propylene oxide (PO) catalyst system. With decreasing the concentration of initiator or increasing the amount of PO fed, as BF3-PO catalyst system was used, the If value increased. The influences on the molecular weight and yield of the polyether obtained were studied. The average hydroxyl end-group functionality of the product was determined to be 2. |
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| Keywords: | Cationic polymerization Ring-opening polymerization Tetrahydrofu- ran Poly (tetramethylene glycol) Poly (tetramethylene glycol-co-propulene glycol) Boron- trifluoride etherate Propylene oxide as polymerization promoter |
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