Knowledge Management System Of Institute of Chemistry，CAS
| Studies on the syndiotactic fraction of poly(phenyl glycidyl ether) (s-PPGE) | |
| Xu, JJ; Yu, YZ | |
| 2000-08-01 | |
| Source Publication | ACTA POLYMERICA SINICA
 |
| ISSN | 1000-3304 |
| Issue | 4Pages:438-442 |
| Abstract | The preparation of syndiotactic polymers through ring-opening polymerization of a chiral monomer bearing one asymmetric center in the ring was not found in literature. This paper presents the synthesis and properties of syndiotactic poly(phenyl glycidyl ether) (PPGE). Phenyl glycidyl ether was polymerized under the effect of Bu2SnO-Bu3PO4 condensates (Sn-P). The tacticity of the obtained PPGE was dependent upon the structure of the catalyst. The Sn-P condensate obtained through a condensation reaction at 220 similar to 260 degrees C for 30 similar to 60 min,and then at 150 similar to 220 degrees C for Ih had two kinds of stereoselective center. Syndiotactic-rich PPGE fractions (s-PPGE) were separated from the polymerization products obtained using Sn-P 8000, a condensate prepared by the two-step condensation,as catalyst. The yield of the s-PPGE fractions reduced as the polymerization temperature enhanced,indicating the activation energy for the syndiotactic center in the catalyst is lower than that for the isotactic center. Compared to the insoluble character of isotactic PPGE (i-PPGE) in any known solvents,s-PPGE can be dissolved in solvents such as chloroform and toluene. The crystallization ability of s-PPGE is lower than that of i-PPGE. The thermal induced crystallization of s-PPGE is very slow. However in the presence of an appropriate solvent such as acetone,it may crystallize quickly. |
| Keyword | Syndiotactic Poly(Phenyl Glycidyl Ether) Bu2sno-bu3po4 Condensates |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000089003100010 |
| Publisher | SCIENCE PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.iccas.ac.cn/handle/121111/76062 |
| Collection | 中国科学院化学研究所 |
| Corresponding Author | Xu, JJ |
| Affiliation | Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China |
| Recommended Citation GB/T 7714 | Xu, JJ,Yu, YZ. Studies on the syndiotactic fraction of poly(phenyl glycidyl ether) (s-PPGE)[J]. ACTA POLYMERICA SINICA,2000(4):438-442. |
| APA | Xu, JJ,&Yu, YZ.(2000).Studies on the syndiotactic fraction of poly(phenyl glycidyl ether) (s-PPGE).ACTA POLYMERICA SINICA(4),438-442. |
| MLA | Xu, JJ,et al."Studies on the syndiotactic fraction of poly(phenyl glycidyl ether) (s-PPGE)".ACTA POLYMERICA SINICA .4(2000):438-442. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment