Ethylene/Propylene Copolymerization Over Three Conventional C-2-Symmetric Metallocene Catalysts: Correlation Between Catalyst Configuration and Copolymer Microstructure
文献类型：期刊论文
| 作者 | Lu, Li1,2; Niu, Hui1; Dong, Jin-Yong1; Zhao, Xutao3; Hu, Xuteng3 |
| 刊名 | JOURNAL OF APPLIED POLYMER SCIENCE
 |
| 出版日期 | 2010-12-15 |
| 卷号 | 118期号:6页码:3218-3226 |
| 关键词 | Ethylene/propylene Copolymerization Copolymer Microstructure Metallocene Catalyst Catalyst Configuration Association |
| ISSN号 | 0021-8995 |
| DOI | 10.1002/app.32553 |
| 英文摘要 | This work reports on a correlation between catalyst configuration and copolymer microstructure for ethylene/propylene (E/P) copolymerization using three conventional C-2-symmetric metallocene catalysts, namely, rac-Et(Ind)(2)ZrCl2 (EBI), rac-Me2Si(2-Me-4-Ph-Ind)(2)ZrCl2 (SiPh), and rac-CH2(3-tBu-Ind)(2)ZrCl2 (MBu), with MAO as a common cocatalyst. Copolymerization reactions were conducted in toluene at three different temperatures with varied E/P ratios. Some typically obtained copolymers were characterized in detail using C-13-NMR spectroscopy, by which triad distribution data were elaborated in a statistical method to determine the reactivity ratios (r(E) and r(P)) of the comonomers, which were also obtained by Fineman-Rose estimation. The production of alternating-like copolymers from EBI is attributed to the rapid interconversion between two conformation states of the active site, one of which favors the incorporation of propylene but the other one does not. Both SiPh and MBu are structurally more rigid and of larger dihedral angles than EBI; however, SiPh which owns open active site conformation tend to produce random copolymers at all studied temperatures, and for MBu, sterically hindered catalyst, block-like copolymers were obtained. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 118: 3218-3226, 2010 |
| 语种 | 英语 |
| WOS记录号 | WOS:000282840500012 |
| 出版者 | WILEY-BLACKWELL |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/70469]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Dong, Jin-Yong |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Joint Lab Polymer Sci & Mat, CAS Key Lab Engn Plast, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.PetroChina Co Ltd, Petrochem Res Inst, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Li,Niu, Hui,Dong, Jin-Yong,et al. Ethylene/Propylene Copolymerization Over Three Conventional C-2-Symmetric Metallocene Catalysts: Correlation Between Catalyst Configuration and Copolymer Microstructure[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2010,118(6):3218-3226. |
| APA | Lu, Li,Niu, Hui,Dong, Jin-Yong,Zhao, Xutao,&Hu, Xuteng.(2010).Ethylene/Propylene Copolymerization Over Three Conventional C-2-Symmetric Metallocene Catalysts: Correlation Between Catalyst Configuration and Copolymer Microstructure.JOURNAL OF APPLIED POLYMER SCIENCE,118(6),3218-3226. |
| MLA | Lu, Li,et al."Ethylene/Propylene Copolymerization Over Three Conventional C-2-Symmetric Metallocene Catalysts: Correlation Between Catalyst Configuration and Copolymer Microstructure".JOURNAL OF APPLIED POLYMER SCIENCE 118.6(2010):3218-3226. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。