%0 Journal Article
%T POLYMERIZATION OF TETRAH YDROFURAN BY BORON TRIFLUORIDE INITIATOR III. Using Propylene Oxide as the Promotor<br>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
%A ZHANG Hong-zhi
%A ZHANG Shu-jie
%A FENG Xin-de
%A <br>张鸿志
%A 张书杰
%A 冯新德
%J 高分子学报
%D 1988
%I 
%X 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.
%K Cationic polymerization
%K Ring-opening polymerization
%K Tetrahydrofu- ran
%K Poly (tetramethylene glycol)
%K Poly (tetramethylene glycol-co-propulene glycol)
%K Boron- trifluoride etherate
%K Propylene oxide as polymerization promoter<br>正离子聚合
%K 开环聚合
%K 四氢呋喃
%K 聚丁二醇
%K 丁二醇-丙二醇共聚醚
%K 三氟化硼-乙醚
%K 环氧丙烷为聚合促进剂
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=6579068328FE643F&jid=15971983683C7643EE80F1CE621DEB60&aid=B079B84B78E46968&yid=0702FE8EC3581E51&iid=E158A972A605785F&sid=C2F76551C0111538&eid=EC34D52BE81085CE&journal_id=1000-3304&journal_name=高分子学报&referenced_num=2&reference_num=0