Microfocus X-ray scattering and micro Raman spectroscopy: transcrystallinity in isotactic polypropylene
2014 (English)In: Physica Status Solidi. Rapid Research Letters, ISSN 1862-6254, E-ISSN 1862-6270, Vol. 8, 724-727 p.Article in journal (Refereed) Published
Microfocus 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. (© 2014 WILEY-VCH Verlag GmbH &Co. KGaA, Weinheim) In fibre-reinforced materials the interaction between the fibre and the matrix strongly affects the final properties of the material. Therefore, a detailed analysis of the interface is of utmost importance. By applying a battery of different microscopic techniques, we investigate the transcrystalline polymorphic morphology of isotactic polypropylene with unprecedented spatial resolution.
Place, publisher, year, edition, pages
Wiley-VCH Verlagsgesellschaft, 2014. Vol. 8, 724-727 p.
Textile, Rubber and Polymeric Materials
IdentifiersURN: urn:nbn:se:kth:diva-180266DOI: 10.1002/pssr.201409207ISI: 000340484100011ScopusID: 2-s2.0-84905898195OAI: oai:DiVA.org:kth-180266DiVA: diva2:892002
QC 201603032016-01-082016-01-082016-03-03Bibliographically approved