Control of molecular weight distribution for polypropylene obtained by commercial ziegler-natta catalyst: Effect of electron donor
文献类型：期刊论文
| 作者 | Zhang HX ; Lee YJ ; Park JR ; Lee DH ; Yoon KB |
| 刊名 | macromolecular research
 |
| 出版日期 | 2011 |
| 卷号 | 19期号:6页码:622-628 |
| 关键词 | EXTERNAL ALKOXYSILANE DONORS PROPYLENE POLYMERIZATION MGCL2-SUPPORTED CATALYST PROPENE POLYMERIZATION ACTIVE-SITES STEREOSPECIFICITY MODIFIERS SYSTEM |
| ISSN号 | 1598-5032 |
| 通讯作者 | lee dh |
| 中文摘要 | polymerization of propylene was carried out using a mgcl(2)-supported ticl(4) catalyst in conjunction with triethylaluminium (tea) as the cocatalyst and various types of alkoxy silane compounds as an external donor. the effect of the external donor on the performance of the catalyst with different internal donors was investigated. the polydispersity index (pdi) of polypropylene (pp) obtained with the diether and succinate based catalyst were decreased with the introduction of an external donor and the pdi increased for the phthalate based catalyst. the molecular weight and pdi increased with the introduction of an external donor. the highest pdi of pp was obtained by polymerization with di-n-propyldimethoxysilane (dnpdms) as an external donor. in addition, a mixture of external donors was used to control the pdi of pp and the composition of the catalyst was examined after treated with tea/external donor. furthermore, the theoretical pdi value was calculated for a mixture of external donor systems. the pdi of pp could be controlled and predicted while retaining high activity, high isospecificity and high molecular weight by changing the structure of the external donor and/or their mixture. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000292047700013 |
| 公开日期 | 2012-06-11 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/44613]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Zhang HX,Lee YJ,Park JR,et al. Control of molecular weight distribution for polypropylene obtained by commercial ziegler-natta catalyst: Effect of electron donor[J]. macromolecular research,2011,19(6):622-628. |
| APA | Zhang HX,Lee YJ,Park JR,Lee DH,&Yoon KB.(2011).Control of molecular weight distribution for polypropylene obtained by commercial ziegler-natta catalyst: Effect of electron donor.macromolecular research,19(6),622-628. |
| MLA | Zhang HX,et al."Control of molecular weight distribution for polypropylene obtained by commercial ziegler-natta catalyst: Effect of electron donor".macromolecular research 19.6(2011):622-628. |
入库方式： OAI收割
来源：长春应用化学研究所
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