Polymerization of rac-lactide using schiff base aluminum catalysts: Structure, activity, and stereoselectivity
文献类型：期刊论文
| 作者 | Du HZ ; Pang X ; Yu HY ; Zhuang XL ; Chen XS ; Cui DM ; Wang XH ; Jing XB |
| 刊名 | macromolecules
 |
| 出版日期 | 2007 |
| 卷号 | 40期号:6页码:1904-1913 |
| 关键词 | RING-OPENING POLYMERIZATION GROUP-3 METAL-COMPLEXES RACEMIC LACTIDE DL-LACTIDE EPSILON-CAPROLACTONE BULK-POLYMERIZATION ALKOXIDE INITIATOR POLY(LACTIC ACID) FERRIC ALKOXIDES SALEN LIGANDS |
| ISSN号 | 0024-9297 |
| 通讯作者 | chen xs |
| 中文摘要 | a series of aluminum ethyls and isopropoxides based upon n,n,o,o-tetradentate schiff base ligand framework have been prepared. x-ray diffraction analysis and h-1 nmr confirmed that these schiff base aluminum ethyls and isopropoxides were all monomeric species with a five-coordinated central aluminum in their solid structures. compared to the aluminum ethyls which all retain their monomeric structure in the solution, the dinucleating phenomenons of aluminum isopropoxides with less steric hindered substituents in the solution have also been observed. the activities and stereoselectivities of these complexes toward the ring-opening polymerization of rac-lactide have been investigated. polymerization experiments indicated that (sb-2d)(alopr)-pr-i [(sb-2d) = 2,2-dimethyl-1,3-propylenebis(3,5-di-tert-butylsalicylideneiminato)] exhibited the highest stereoselectivity and (sb-3b)(alopr)-pr-i [(sb-3b) = 2,2-dimethyl-1,3-propylenebis(3,5-dichlorinesalicylideneiminato)] possessed the highest activity among these aluminum isopropoxides. the substituents and the mode of the bridging part between the two nitrogen atoms both exerted significant influences upon the progress of the polymerizations, influencing either the tacticity of isolated polymers or the rate of polymerization. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000244855500024 |
| 公开日期 | 2010-07-13 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/14433]  |
| 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 | Du HZ,Pang X,Yu HY,et al. Polymerization of rac-lactide using schiff base aluminum catalysts: Structure, activity, and stereoselectivity[J]. macromolecules,2007,40(6):1904-1913. |
| APA | Du HZ.,Pang X.,Yu HY.,Zhuang XL.,Chen XS.,...&Jing XB.(2007).Polymerization of rac-lactide using schiff base aluminum catalysts: Structure, activity, and stereoselectivity.macromolecules,40(6),1904-1913. |
| MLA | Du HZ,et al."Polymerization of rac-lactide using schiff base aluminum catalysts: Structure, activity, and stereoselectivity".macromolecules 40.6(2007):1904-1913. |
入库方式： OAI收割
来源：长春应用化学研究所
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