Regiochemistry-Aligned Copolymerization of Propylene with p-Methylstyrene and 1,4-Divinylbenzene Using an ansa-Metallocene Catalyst
文献类型：期刊论文
| 作者 | Dong, Cheng1,2; Wang, Ning1; Qin, Yawei1; Niu, Hui1; Dong, Jin-Young1 |
| 刊名 | MACROMOLECULAR CHEMISTRY AND PHYSICS
 |
| 出版日期 | 2014-09-01 |
| 卷号 | 215期号:18页码:1776-1784 |
| 关键词 | Ansa-metallocene Catalysts P-methylstyrene Propylene Regiochemistry 1 4-divinylbenzene |
| ISSN号 | 1022-1352 |
| DOI | 10.1002/macp.201400136 |
| 英文摘要 | Copolymerization of propylene with styrenic alpha-olefin monomers is rare with C-2-symmetric ansa metallocene-type catalysts, which are the dominant single-site catalysts for isospecific propylene polymerization. This makes it difficult to obtain compositionally narrow-distributed reactive polypropylene with isotactic stereoregularity (iPP) bearing benzyl and styryl moieties, which are important precursors for iPP functionalization. In this paper, rac-CH2(3-t-Bu-1-Ind)(2)ZrCl2 is paired with methylaluminoxane (MAO) and used in copolymerization of propylene with p-methylstyrene (p-MS) and 1,4-divinylbenzene (DVB). Due to the unified primary regiochemistry of the catalyst toward both propylene and the styrenic monomers, both copolymerizations are viable, with the incorporation of the styrenic monomers not disastrously decreasing the catalyst activity. The fingerprint primary-primary consecutive sequences of propylene and p-MS/DVB are clearly identified by C-13 NMR. As high as 1.37 mol% of p-MS and 0.93 mol% of DVB are incorporated into iPPZ at fairly high catalyst activities. It is noteworthy that DVB is incorporated with a selective mono-enchainment mode, leaving iPP with pendant styryl groups on the linear backbone. Both the iPP/p-MS and iPP/DVB copolymers show narrow molecular weight distributions (<3), indicating a single-site characteristic of the copolymerizations. Overall, copolymerization of propylene with p-MS and DVB with a C-2-symmetric ansa-metallocene catalyst is made possible by unification of the insertion regiochemistry of the comonomers. |
| 语种 | 英语 |
| WOS记录号 | WOS:000342622800010 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/52541]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Dong, Jin-Young |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dong, Cheng,Wang, Ning,Qin, Yawei,et al. Regiochemistry-Aligned Copolymerization of Propylene with p-Methylstyrene and 1,4-Divinylbenzene Using an ansa-Metallocene Catalyst[J]. MACROMOLECULAR CHEMISTRY AND PHYSICS,2014,215(18):1776-1784. |
| APA | Dong, Cheng,Wang, Ning,Qin, Yawei,Niu, Hui,&Dong, Jin-Young.(2014).Regiochemistry-Aligned Copolymerization of Propylene with p-Methylstyrene and 1,4-Divinylbenzene Using an ansa-Metallocene Catalyst.MACROMOLECULAR CHEMISTRY AND PHYSICS,215(18),1776-1784. |
| MLA | Dong, Cheng,et al."Regiochemistry-Aligned Copolymerization of Propylene with p-Methylstyrene and 1,4-Divinylbenzene Using an ansa-Metallocene Catalyst".MACROMOLECULAR CHEMISTRY AND PHYSICS 215.18(2014):1776-1784. |
入库方式： OAI收割
来源：化学研究所
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