J. Martin, M. Ponçot, J.M. Hiver, P. Bourson and A. Dahoun Real-time Raman spectroscopy measurements to study the uniaxial tension of isotactic polypropylene: a global overview of microstructural deformation mechanisms Journal of Raman Spectroscopy 44
Raman spectroscopy is combined to a video-controlled tensile test machine using the VideoTractionTM system in order to enable the investigation of the micromechanisms of deformation of semi-crystalline polymers. This apparatus is applied to analyze the microstructural changes occurring in an isotactic polypropylene in real time during a uniaxial stretching test. Results are in good agreement with previous descriptive models encountered in the literature in case of stretched semi-crystalline polymer which described in details the evolution of the microstructure of such kind of materials.
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