杂多酸引发四氢呋喃开环聚合反应Ⅵ.以环氧氯丙烷为促进剂  

TETRAHYDROFURAN POLYMERIZATION INITIATED WITH HETEROPOLYACID VI. EPICHLOROHYDRIN AS PROMOTER

作　　者：陈宇[1] 张广利[1] 张鸿志[1] 

机构地区：[1]北京大学化学与分子工程学院,北京100871

出　　处：《高分子学报》2000年第3期372-374,共3页Acta Polymerica Sinica

基　　金：高等学校博士学科点专项科研基金资助项目!(基金号 980 0 0 12 2 )

摘　　要：The polymerization of tetrahydrofuran(THF) initiated by heteropolyacid—H 3PW 12 O 40 (PW 12 ) in low concentrations could be effectively promoted by epichlorohydrin(ECH).However, the promotion activity of ECH is lower than that of EO or PO, especially when water was introduced. The polymerization started upon addition of epichlorohydrin.When the polymerization has stopped, it could be re\|initiated with the addition of a new portion of ECH. The products were found to be copolyether glycols with hydroxyl groups at both ends.The percentage of the hydroxyl group attached to ECH moieties at the polymer chain\|ends was higher than 50% of the total hydroxyl end\|groups. Most of the ECH moieties in chains attached to hydroxyl end groups, and no primary hydroxyl groups derived from ECH could be detected.The polymerization of tetrahydrofuran(THF) initiated by heteropolyacid—H 3PW 12 O 40 (PW 12 ) in low concentrations could be effectively promoted by epichlorohydrin(ECH).However, the promotion activity of ECH is lower than that of EO or PO, especially when water was introduced. The polymerization started upon addition of epichlorohydrin.When the polymerization has stopped, it could be re\|initiated with the addition of a new portion of ECH. The products were found to be copolyether glycols with hydroxyl groups at both ends.The percentage of the hydroxyl group attached to ECH moieties at the polymer chain\|ends was higher than 50% of the total hydroxyl end\|groups. Most of the ECH moieties in chains attached to hydroxyl end groups, and no primary hydroxyl groups derived from ECH could be detected.

关 键 词：杂多酸 四氢呋喃 环氧氯丙烷 促进剂 开环聚合 

分 类 号：O631[理学—高分子化学]