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Título

Microfocus X-ray scattering and micro-Raman spectroscopy: Transcrystallinity in isotactic polypropylene

Autor Santoro, Gonzalo ; Yu, Shun; Krywka, Chr.; Roth, Stephan V.; Ellis, Gary James
Palabras clave X-ray scattering
Raman spectroscopy
Transcrystallinity
Fibre-reinforced materials
Polypropylene
Growth bifurcation
Fecha de publicación 2014
EditorWiley-VCH
Citación Physica Status Solidi - Rapid Research Letetrs 8: 724- 727 (2014)
ResumenMicrofocus X-ray scattering and micro Raman spectroscopy have been applied to study the β-transcrystalline morphology in isotactic polypropylene. The transformation from the α- to the β-form through the so-called bifurcation of growth mechanism has been investigated with high spatial resolution. We found that the mixed α-β region does not present spatial correlation along the shearing direction, implying that there is no cooperative crystallization from the different β-nucleation centres. In addition, a strong change in the lamellar orientation of the α-form thin layer that induces the growth of the β-crystallites has been observed for the first time. Finally, changes in the relative intensities of some selected Raman bands allowed the observation of the α-β transformation process at the molecular level.
URI http://hdl.handle.net/10261/102530
DOI10.1002/pssr.201409207
Identificadoresdoi: 10.1002/pssr.201409207
issn: 1862-6270
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