Determination of Lamella Thickness Distributions in Isotactic Polypropylene by X-ray Line Profile Analysis

Autor(en)

Florian Spieckermann, Harald Wilhelm, Michael Kerber, Erhard Schafler, Gerald Polt, Sigrid Bernstorff, Frédéric Addiego, Michael Zehetbauer

Abstrakt

X-ray line profile analysis was used to determine the size distribution of the crystalline lamellae in isotactic polypropylene (iPP) assuming a log-normal size distribution. A comparison with the size distribution as determined by differential scanning calorimetry (DSC) yields an excellent agreement of both methods. It is noted that the agreement depends strongly on whether linear lattice defects, particularly dislocations are taken into account in the X-ray analysis. This is especially true for deformed iPP with a high number of deformation induced dislocations. It was also found that for a multimodal distribution of lamella thickness in the DSC experiment as induced by the introduction of titanium dioxide nanoparticles as filler material the lamella thickness distribution from X-ray profile analysis is still in good agreement with DSC although the model used was only monomodal.

Organisation(en)

Physik Nanostrukturierter Materialien

Externe Organisation(en)

Elettra Sincrotrone Trieste, Centre de Recherche Public Henry Tudor, TGM - Technologisches Gewerbemuseum

Journal

Polymer

Band

51

Seiten

4195-4199

Anzahl der Seiten

6

ISSN

0032-3861

DOI

https://doi.org/10.1016/j.polymer.2010.07.009

Publikationsdatum

2010

Peer-reviewed

Ja

ÖFOS 2012

103023 Polymerphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/73cd32e7-54c6-40ab-8506-d63c437e8684