Structure and orientation dynamics of sepiolite fibers–poly(ethylene oxide) aqueous suspensions under extensional and shear flow, probed by in situ SAXS
作者: Frédéric PignonAlbert MagninJean-Michel PiauGàbor BelinaPierre Panine
作者单位: 1Laboratoire de Rhéologie, Institut National Polytechnique de Grenoble, Université Joseph Fourier-Grenoble I
2European Synchrotron Radiation Facility
刊名: Rheologica Acta, 2009, Vol.48 (5), pp.563-578
来源数据库: Springer Nature Journal
DOI: 10.1007/s00397-009-0355-y
关键词: SepioliteFiberClayPoly(ethylene oxide)NanocompositesColloidal suspensionSAXSExtensional flowRheo-SAXS
英文摘要: Abstract(#br)The structure and orientation dynamics of sepiolite clay fibers about 1,000 nm long and 10 nm thick, suspended in an aqueous poly(ehtylene oxide) matrix of 10 5 g/mol molecular mass, have been studied under control extensional and shear flow. A new extensional flow cell developed at the “Laboratoire de Rhéologie” and the combined rheology and small angle X-ray scattering (Rheo-SAXS) setup available at the European Synchrotron Radiation Facility have allowed access to in situ and time-resolved fiber orientations and structure properties in the volume of suspensions under flow. In the volume fractions and shear rate domains for which the suspensions exhibit shear-thinning properties, two regimes of orientation separated by a critical strain rate have been identified under...
全文获取路径: Springer Nature  (合作)
影响因子:1.626 (2012)

  • ethylene oxide 氧丙环
  • sepiolite 海泡石
  • poly 
  • aqueous 水的
  • orientation 定向
  • extensional 扩充
  • dynamics 动力学
  • shear 切变
  • under 在下