| 一种新型丁二烯和苯乙烯嵌段共聚物的结构表征 |
| |
| 引用本文： | 朱寒,吴一弦,郭青磊,武冠英.一种新型丁二烯和苯乙烯嵌段共聚物的结构表征[J].北京化工大学学报(自然科学版),2004,31(6):47-51. |
| |
| 作者姓名： | 朱寒 吴一弦 郭青磊 武冠英 |
| |
| 作者单位： | 北京化工大学可控化学反应科学与技术基础教育部重点实验室;北京 100029 |
| |
| 基金项目： | 国家自然科学基金
,
中国石油化工集团公司资助项目
,
教育部优秀青年教师资助计划 |
| |
| 摘 要： | 采用具有f 轨道的稀土金属催化剂进行丁二烯(Bd)与苯乙烯(St)嵌段共聚得到丁苯共聚物。利用FTIR ,1H NMR和13C-NMR和TEM分别对萃取均聚物后的共聚物进行微观结构、共聚物组成和微观形态的表征,利用GPC双检测(RI,UV)表征共聚物的相对分子质量、相对分子质量分布以及组成分布。实验结果表明:该共聚物为丁二烯与苯乙烯的嵌段共聚物,丁二烯结构单元中顺-1,4摩尔分数为97.0%,苯乙烯结合量为21.8% (摩尔分数)。共聚物中聚丁二烯(PB)链段与聚苯乙烯 (PS)链段形成了微观相分离结构。
|
| 关 键 词： | 嵌段共聚物 聚苯乙烯 聚丁二烯 嵌段共聚物 聚苯乙烯 聚丁二烯 |
| 收稿时间： | 2004-04-29 |
| 修稿时间： | 2004年4月29日 |
Structural characterization of a novel butadiene-styrene block copolymer |
| |
| Zhu Han,Wu Yi-xian,Guo Qing-lei,Wu Guan-ying.Structural characterization of a novel butadiene-styrene block copolymer[J].Journal of Beijing University of Chemical Technology,2004,31(6):47-51. |
| |
| Authors: | Zhu Han Wu Yi-xian Guo Qing-lei Wu Guan-ying |
| |
| Institution: | The Key Laboratory of Science and Technology of Controllable Chemical Reactions; Ministry of Education; Beijing University of Chemical Technology; Beijing 100029; China |
| |
| Abstract: | Copolymerization of butadiene (Bd) and styrene (St) were carried out by using a rare earth catalyst system. The microstructure, composition, and morphology of the copolymer were characterized by FTIR, 1H-NMR, 13 C-NMR and TEM. The molecular weight, molecular weight distribution and the composition distribution of the copolymer were determined by GPC with RI and UV detectors. The results show that the copolymer is a block copolymer of butadiene and styrene with high cis-1,4 content. The cis-1,4 content of butadiene unit is 97.0%(mol), and the styrene content is 21.8%(mol). The phase-separated morphology is formed by polybutadiene (PB) and polystyrene (PS) sequences. |
| |
| Keywords: | block copolymer polystyrene polybutadiene |
| 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 |
