Investigation of Structural Processes During Indentation of Polymers by Synchrotron Radiation Microdiffraction
作者： M. C. García Gutiérrez , A. Gourrier , C. Riekel
DOI: 10.1081/MB-120027763
关键词: Indentation 、 Orthorhombic crystal system 、 Beamline 、 Monoclinic crystal system 、 Optics 、 Materials science 、 Single domain 、 Scattering 、 Fiber 、 Synchrotron radiation
摘要: Abstract A Vickers microindentation setup has been integrated into the scanning used at European Synchrotron Radiation Facility (ESRF) microfocus beamline (ID 13). Ex situ wide‐angle x‐ray scattering experiments performed on an isotactic polypropylene (iPP) single fiber show changes in chain orientation and breakup of monoclinic α‐modification domains due to plastic deformation indented zone. The systematic mapping perturbed zone allows spatially dependant structural be determined. Similar for a Vectra partial transformation pseudohexagonal phase orthorhombic phase. In allow following as function time applied force. During indentation iPP fiber, domain doubling during recovery after tip retracted is observed.
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