中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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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