Biodegradation study on poly( ε ‐caprolactone) with bimodal molecular weight distribution
作者: Soňa HermanováRadka BálkováStanislava VoběrkováIvana ChamradováJiřina OmelkováLukáš RichteraLudmila MravcováJosef Jančář
作者单位: 1Central European Institute of Technology, Brno University of Technology, Technická 3058/10, 616 00 Brno, Czech Republic
2 Faculty of Chemistry, Institute of Materials Chemistry, Brno University of Technology, Purkyňova 118, 612 00 Brno, Czech Republic
3 Faculty of Agronomy, Institute of Chemistry and Biochemistry, Mendel University in Brno, Zemědělská 1/1665, 613 00, Czech Republic
4 Faculty of Chemistry, Institute of Food Science and Biotechnology, Brno University of Technology, Purkyňova 118, 612 00 Brno, Czech Republic
5 Faculty of Chemistry, Institute of Chemistry and Technology of Environmental Protection, Brno University of Technology, Purkyňova 118, 612 00 Brno, Czech Republic
6 Central European Institute of Technology, Brno University of Technology, Technická 3058/10, 616 00 Brno, Czech Republic
刊名: Journal of Applied Polymer Science, 2013, Vol.127 (6), pp.4726-4735
来源数据库: Wiley Journal
DOI: 10.1002/app.38078
关键词: polycaprolactonedegradationlipaseBacillus subtilisAspergillus oryzaecrystallinitymorphologybimodal molecular weight distribution
原始语种摘要: Abstract(#br)Poly(ε‐caprolactone) (PCL) of bimodal molecular weight distribution was exposed to the action of enzymes‐lipases from Aspergillus oryzae in phosphate buffer at pH 7 and 37°C, and those produced in situ by Bacillus subtilis in nutrient medium at 30°C for 42 days. The occurrence of biodegradation is proved on the basis of the weight loss, decrease of molecular weight, carbonyl index, crystallinity, and development of cracks on the PCL surfaces. In the case of Bacillus subtilis , the degradation (10 wt % loss of PCL) proceeds faster in comparison with lipase from Aspergillus oryzae (2.6 wt % loss of PCL), where the degradation process seems to stop during 14 days of experiment. The gel permeation chromatography results reveal that preferential degradation of lower molecular...
全文获取路径: Wiley  (合作)
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关键词翻译
关键词翻译
  • degradation 减嚣夷酌
  • weight 
  • caprolactone 已内酯
  • bimodal 双峰的
  • molecular 分子的
  • distribution 分布
  • occur 产生
  • biological 生物学的
  • PCL Packet Control Layer
  • decrease 减少