Stereoselective polymerization of rac-lactide with a bulky aluminum/Schiff base complex
文献类型：期刊论文
| 作者 | Tang ZH ; Chen XS ; Yang YK ; Pang X ; Sun JR ; Zhang XF ; Jing XB |
| 刊名 | journal of polymer science part a-polymer chemistry
 |
| 出版日期 | 2004 |
| 卷号 | 42期号:23页码:5974-5982 |
| 关键词 | RING-OPENING POLYMERIZATION ENANTIOMERIC POLY(LACTIC ACID)S STEREOCOMPLEX FORMATION RACEMIC LACTIDE SINGLE-SITE ALKOXIDE CATALYST BLOCK-COPOLYMERS MECHANISM INITIATOR POLYMERS |
| ISSN号 | 0887-624x |
| 通讯作者 | chen xs |
| 中文摘要 | an aluminum/schiff base complex {[2,2-dimethyl-1,3-propylenebis(3,5-di-tert-butylsalicylideneiminato)](isopropanolato)aluminum(iii) (2)} based on a bulky ligand and aluminum isopropoxide was prepared and employed for the stereoselective ring-opening polymerization (rop) of rac-lactide (rac-la). the initiator was characterized with nuclear magnetic resonance (nmr), crystal structure measurements, and elemental analysis. it contained a five-coordinate aluminum atom that was trigonal bipyramidal in the solid state according to the crystal structure measurements. the two conformational stereoisomers of 2 exchanged quickly on the nmr scale. compound 2 polymerized rac-la into a crystalline polymer that was characterized with h-1 nmr, wide-angle x-ray diffraction, electrospray ionization mass spectrometry, and gel permeation chromatography. the kinetics of the polymerization were first-order in both the monomer and initiator, and there was a linear relationship between the rac-la conversion and the number-average molecular weight of poly(rac-la) with a narrow molecular distribution (1.04-1.08). these features showed that the polymerization was well controlled. the high melting temperature (196-201 degreesc) and isotacticity of poly(rac-la) indicated that complex 2 was a highly stereoselective initiator for the rop of rac-la. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000225201300014 |
| 公开日期 | 2010-08-17 |
| 源URL | [http://202.98.16.49/handle/322003/15459]  |
| 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 | Tang ZH,Chen XS,Yang YK,et al. Stereoselective polymerization of rac-lactide with a bulky aluminum/Schiff base complex[J]. journal of polymer science part a-polymer chemistry,2004,42(23):5974-5982. |
| APA | Tang ZH.,Chen XS.,Yang YK.,Pang X.,Sun JR.,...&Jing XB.(2004).Stereoselective polymerization of rac-lactide with a bulky aluminum/Schiff base complex.journal of polymer science part a-polymer chemistry,42(23),5974-5982. |
| MLA | Tang ZH,et al."Stereoselective polymerization of rac-lactide with a bulky aluminum/Schiff base complex".journal of polymer science part a-polymer chemistry 42.23(2004):5974-5982. |
入库方式： OAI收割
来源：长春应用化学研究所
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