Studies on the syndiotactic fraction of poly(phenyl glycidyl ether) (s-PPGE)
文献类型：期刊论文
| 作者 | Xu, JJ; Yu, YZ |
| 刊名 | ACTA POLYMERICA SINICA
 |
| 出版日期 | 2000-08-01 |
| 期号 | 4页码:438-442 |
| 关键词 | Syndiotactic Poly(Phenyl Glycidyl Ether) Bu2sno-bu3po4 Condensates |
| ISSN号 | 1000-3304 |
| 英文摘要 | 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. |
| 语种 | 英语 |
| WOS记录号 | WOS:000089003100010 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/76061]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Xu, JJ |
| 作者单位 | Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：化学研究所
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