Strontium-based initiator system for ring-opening polymerization of cyclic esters
文献类型：期刊论文
| 作者 | Tang, ZH; Chen, XS; Hang, QZ; Bian, XC; Yang, LX; Piao, LH; Jing, XB |
| 刊名 | JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
 |
| 出版日期 | 2003-07-01 |
| 卷号 | 41期号:13页码:1934-1941 |
| 关键词 | Strontium Initiators Ring-opening Polymerization Polyesters |
| ISSN号 | 0887-624X |
| DOI | 10.1002/pola.10740 |
| 英文摘要 | An amino isopropoxyl strontium (Sr-PO) initiator, which was prepared by the reaction of propylene oxide with liquid strontium ammoniate solution, was used to carry out the ring-opening polymerization (ROP) of cyclic esters to obtain aliphatic polyesters, such as poly(epsilon-caprolactone) (PCL) and poly(L-lactide) (PLLA). The Sr-PO initiator demonstrated an effective initiating activity for the ROP of epsilon-caprolactone (epsilon-CL) and L-lactide (LLA) under mild conditions and adjusted the molecular weight by the ratio of monomer to Sr-PO initiator. Block copolymer PCL-b-PLLA was prepared by sequential polymerization of epsilon-CL and LLA, which was demonstrated by H-1 NMR, C-13 NMR, and gel permeation chromatography. The chemical structure of Sr-PO initiator was confirmed by elemental analysis of Sr and N, H-1 NMR analysis of the end groups in epsilon-CL oligomer, and Fourier transform infrared (FTIR) spectroscopy. The end groups of PCL were hydroxyl and isopropoxycarbonyl, and FTIR spectroscopy showed the coordination between Sr-PO initiator and model monomer gamma-butyrolactone. These experimental facts indicated that the ROP of cyclic esters followed a coordination-insertion mechanism, and cyclic esters exclusively inserted into the Sr-O bond. (C) 2003 Wiley Periodicals, Inc. |
| 语种 | 英语 |
| WOS记录号 | WOS:000183564300007 |
| 出版者 | JOHN WILEY & SONS INC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/81047]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Chen, XS |
| 作者单位 | Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, ZH,Chen, XS,Hang, QZ,et al. Strontium-based initiator system for ring-opening polymerization of cyclic esters[J]. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,2003,41(13):1934-1941. |
| APA | Tang, ZH.,Chen, XS.,Hang, QZ.,Bian, XC.,Yang, LX.,...&Jing, XB.(2003).Strontium-based initiator system for ring-opening polymerization of cyclic esters.JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,41(13),1934-1941. |
| MLA | Tang, ZH,et al."Strontium-based initiator system for ring-opening polymerization of cyclic esters".JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 41.13(2003):1934-1941. |
入库方式： OAI收割
来源：化学研究所
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