Preparation of linear low-density polyethylene by in situ copolymerization of ethylene with Zr supported on montmorillonite/Fe/methylaluminoxane catalyst system
文献类型：期刊论文
| 作者 | Zhang, ZC; Guo, CY; Cui, NN; Ke, YC; Hu, YL |
| 刊名 | JOURNAL OF APPLIED POLYMER SCIENCE
 |
| 出版日期 | 2004-11-15 |
| 卷号 | 94期号:4页码:1690-1696 |
| 关键词 | Copolymerization Linear Low-density Polyethylene (Lldpe) Oligomers Branched Catalysts |
| ISSN号 | 0021-8995 |
| DOI | 10.1002/app.21066 |
| 英文摘要 | Linear low-density polyethylene (LLDPE) was prepared by in situ copolymerization of ethylene with dual-functional catalysts that were composed of rac-Et(Ind)(2)ZrCl2 supported on montmorillonite (MMT) and {[(2-ArN = C(Me))(2)C5H3N]FeCl2}[Ar = 2,4-C6H4(Me)(2)] oligomerization catalyst. A series of polyethylenes with different degrees of branching were obtained by adjusting the ratio of Fe and Zr (Fe/Zr). DSC, NMR, GPC, SEM, and density-gradient method were used to characterize the polymers. With increasing Fe/Zr ratio, the densities and melting points of polymers decreased, whereas the branching degrees and molecular weights increased. When the Fe/Zr ratio was increased, the activities of the catalysts decreased at atmospheric pressure and increased at 0.7 MPa ethylene pressure. SEM micrographs revealed that the morphology of branched polyethylene, produced with the catalyst supported on MMT, is better than that produced by the catalyst in a homogeneous system. (C) 2004 Wiley Periodicals, Inc. |
| 语种 | 英语 |
| WOS记录号 | WOS:000224224400048 |
| 出版者 | JOHN WILEY & SONS INC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/81843]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Hu, YL |
| 作者单位 | 1.Chinese Acad Sci, Ctr Mol Sci, Inst Chem, State Key Lab Engn Plast, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, ZC,Guo, CY,Cui, NN,et al. Preparation of linear low-density polyethylene by in situ copolymerization of ethylene with Zr supported on montmorillonite/Fe/methylaluminoxane catalyst system[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2004,94(4):1690-1696. |
| APA | Zhang, ZC,Guo, CY,Cui, NN,Ke, YC,&Hu, YL.(2004).Preparation of linear low-density polyethylene by in situ copolymerization of ethylene with Zr supported on montmorillonite/Fe/methylaluminoxane catalyst system.JOURNAL OF APPLIED POLYMER SCIENCE,94(4),1690-1696. |
| MLA | Zhang, ZC,et al."Preparation of linear low-density polyethylene by in situ copolymerization of ethylene with Zr supported on montmorillonite/Fe/methylaluminoxane catalyst system".JOURNAL OF APPLIED POLYMER SCIENCE 94.4(2004):1690-1696. |
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。