Investigation of the effect of branched structure on the performances of the copolymers synthesized from ethylene and alpha-olefin with rac-Et(Ind)(2)ZrCl2/MMAO catalyst system
文献类型：期刊论文
| 作者 | Pan, L; Liu, YG; Zhang, KY; Bo, SQ; Li, YS |
| 刊名 | POLYMER
 |
| 出版日期 | 2006-02-08 |
| 卷号 | 47期号:4页码:1465-1472 |
| 关键词 | Ethylene/alpha-olefin Copolymers Metallocene Polyethylene Rheology |
| ISSN号 | 0032-3861 |
| DOI | 10.1016/j.polymer.2005.12.037 |
| 英文摘要 | The branched copolymers prepared from ethylene and alpha-olefins using rac-Et(Ind)(2)ZrCl2/MMAO catalyst system were studied. Both the absolute molecular weight ((M) over bar (W)) and the molecular size (radius of glyration, R-g) of the polymers eluting from gel permeation chromatography (GPC) columns were obtained simultaneously via a high temperature GPC coupled with a two-angle laser light scattering (TALLS) detector. The branched structures and performances of the copolymers display approximate molecular weight and molecular sizes were investigated. Wide angle X-ray diffraction analyses indicate that 16-carbon side branch could co-crystallize effectively with backbone chain at low alpha-olefin incorporation. The melt behaviors of the copolymers were studied by dynamic rheological measurements. Both branch length and comonomer content affect considerably the loss modulus, storage modulus and complex viscosity of the copolymers. The relationship between the dynamic-mechanical behavior and the comonomer content of the copolymers was also examined by dynamic-mechanical experiments. It is found that the intensity of beta-transition raise with comonomer content increasing. (c) 2005 Elsevier Ltd. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000235522900061 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/59947]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Li, YS |
| 作者单位 | Chinese Acad Sci, Grad Sch, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pan, L,Liu, YG,Zhang, KY,et al. Investigation of the effect of branched structure on the performances of the copolymers synthesized from ethylene and alpha-olefin with rac-Et(Ind)(2)ZrCl2/MMAO catalyst system[J]. POLYMER,2006,47(4):1465-1472. |
| APA | Pan, L,Liu, YG,Zhang, KY,Bo, SQ,&Li, YS.(2006).Investigation of the effect of branched structure on the performances of the copolymers synthesized from ethylene and alpha-olefin with rac-Et(Ind)(2)ZrCl2/MMAO catalyst system.POLYMER,47(4),1465-1472. |
| MLA | Pan, L,et al."Investigation of the effect of branched structure on the performances of the copolymers synthesized from ethylene and alpha-olefin with rac-Et(Ind)(2)ZrCl2/MMAO catalyst system".POLYMER 47.4(2006):1465-1472. |
入库方式： OAI收割
来源：化学研究所
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