Study on cationic ring-opening polymerization of 1,3-dioxepane with oxocarbenium salt as initiator

被引：0
|
作者：
Xu, YJ [1 ]
Pan, CY [1 ]
机构：
[1] Univ Sci & Technol China, Dept Polymer Sci & Engn, Hefei 230026, Anhui, Peoples R China
来源：
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 1999年 / 37卷 / 16期
关键词：
star-shaped polyacetal; poly (DOP) triol; cationic ring-opening polymerization; trioxocarbenium perchlorate;
D O I：
10.1002/(SICI)1099-0518(19990815)37:16<3401::AID-POLA39>3.0.CO;2-P
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Poly (1,3-dioxepane) [PDOP] triol was prepared by cationic ring-opening polymerization with [C2H5C(CH2OCH2CH2CO+ClO4-)(3)], trioxocarbenium perchlorate, as an initiator. The structures of the PDOP triols obtained were verified by H-1-NMR, FTIR, and GPC results. Initiation, propagation, and termination mechanisms were discussed based on the structural analysis of the polyacetal polyols. The results of GPC, NMR, and IR measurements showed that the PDOP triols obtained had similar branch chain lengths. Number-average molecular weights were determined by vapor pressure osmometry (VPO), end group titration and H-1-NMR. (C) 1999 John Wiley & Sons, Inc.
引用
收藏
页码：3401 / 3406
页数：6
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