Lipase-catalyzed synthesis of poly(epsilon-caprolactone) and characterization of its solid-state properties
文献类型：期刊论文
| 作者 | Yang Y ; Ge YK ; Zhao H ; Shi W ; Li QS |
| 刊名 | biocatalysis and biotransformation
 |
| 出版日期 | 2011 |
| 卷号 | 29期号:6页码:337-343 |
| 关键词 | RING-OPENING POLYMERIZATION SUPERCRITICAL CARBON-DIOXIDE EPSILON-CAPROLACTONE POLYESTER SYNTHESIS MECHANISM LACTONES KINETICS SOLVENT MEDIA |
| ISSN号 | 1024-2422 |
| 通讯作者 | li qs |
| 中文摘要 | ring-opening polymerization of e-caprolactone has been successfully conducted using an immobilized form of candida antarctica lipase b as catalyst. the effects of enzyme concentration, reaction medium, reaction temperature and time on monomer conversion and product molecular weight were investigated. through optimization of reaction conditions, poly(epsilon-caprolactone) (pcl) was obtained with 99% monomer conversion and a number-average molecular weight (m(n)) of 18870 g/mol. the reaction system was then scaled up, and pcl was synthesized in 78% isolated yield, with m(n) and polydispersity index of 41540 g/mol and 1.69, respectively. the solid-state properties of this sample were systematically evaluated using thermogravimetric analysis (tga), differential scanning calorimetry (dsc), wide-angle x-ray diffraction (waxd) and polarized optical microscopy (pom). the product pcl showed excellent thermal stability, with degradation of the main chain in the temperature range of 280-450 degrees c. remarkably, this high molecular weight pcl was a typical crystalline polymer with a high degree of crystallinity observed by dsc, waxd and pom. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000297345400013 |
| 公开日期 | 2012-06-07 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/44200]  |
| 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 | Yang Y,Ge YK,Zhao H,et al. Lipase-catalyzed synthesis of poly(epsilon-caprolactone) and characterization of its solid-state properties[J]. biocatalysis and biotransformation,2011,29(6):337-343. |
| APA | Yang Y,Ge YK,Zhao H,Shi W,&Li QS.(2011).Lipase-catalyzed synthesis of poly(epsilon-caprolactone) and characterization of its solid-state properties.biocatalysis and biotransformation,29(6),337-343. |
| MLA | Yang Y,et al."Lipase-catalyzed synthesis of poly(epsilon-caprolactone) and characterization of its solid-state properties".biocatalysis and biotransformation 29.6(2011):337-343. |
入库方式： OAI收割
来源：长春应用化学研究所
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