| 高等规度聚丙烯腈的合成 |
| |
| 引用本文： | 徐晶,许志献,代永强,徐樑华,金日光.高等规度聚丙烯腈的合成[J].北京化工大学学报(自然科学版),2007,34(6):608-611. |
| |
| 作者姓名： | 徐晶 许志献 代永强 徐樑华 金日光 |
| |
| 作者单位： | 北京化工大学材料科学与工程学院,北京,100029;北京化工大学材料科学与工程学院,北京,100029;北京化工大学材料科学与工程学院,北京,100029;北京化工大学材料科学与工程学院,北京,100029;北京化工大学材料科学与工程学院,北京,100029 |
| |
| 摘 要： | 研究了在不同的反应条件下二丁基镁引发的丙烯腈阴离子聚合反应，得到了等规度较高的聚丙烯腈(PAN)，通过对碳的核磁谱图（13C-NMR）分析得出聚合产物中三单元组全同立构、间同立构及无规立构的含量，三单元组等规立构的质量分数可以达到56.49%。将二丁基镁引发的PAN等规立构含量与偶氮二异丁氰(AIBN)引发的自由基聚合得到的PAN等规立构含量进行了比较，通过示差扫描量热分析（DSC）测试，结果表明等规度较高的PAN在预氧化过程中放热量大，易于氧化成环。
|
| 关 键 词： | 聚丙烯腈(PAN) 等规立构 二丁基镁 |
| 收稿时间： | 2007-03-01 |
| 修稿时间： | 2007年3月1日 |
Synthesis of highly isotactic polyacrylonitrile |
| |
| XU Jing,XU ZhiXian,DAI YongQiang,XU LiangHua,JIN RiGuang.Synthesis of highly isotactic polyacrylonitrile[J].Journal of Beijing University of Chemical Technology,2007,34(6):608-611. |
| |
| Authors: | XU Jing XU ZhiXian DAI YongQiang XU LiangHua JIN RiGuang |
| |
| Institution: | College of Materials Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China |
| |
| Abstract: | The anionic polymerization of acrylonitrile (AN) initiated by dibutylmagnesium has been investigated using different reaction conditions and the triad tacticities of the resulting polyacrylonitrile (PAN) were analyzed by 13C-NMR spectroscopy. Relatively highly isotactic polyacrylonitrile samples were obtained, with the maximum isotactic triad content being 56.49%. The polyacrylonitrile samples were compared with that obtained by free-radical polymerization of AN using AIBN as initiator. Differential scanning calorimeter (DSC) showed that the highly isotactic polyacrylonitrile releases more heat during the pre-oxidatiion step which promotes the subsequent cyclization process. |
| |
| Keywords: | polyacrylonitrile isotacticity dibutylmagnesium |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《北京化工大学学报(自然科学版)》浏览原始摘要信息 |
| 点击此处可从《北京化工大学学报(自然科学版)》下载免费的PDF全文 |
