Plasticity and X-ray Line Profile Analysis of the Semicrystalline Polymer Poly(3-hydroxybutyrate)

Autor(en)

Florian Spieckermann, Harald Wilhelm, Erhard Schafler, Michael Kerber, Sigrid Bernstorff, Michael Zehetbauer

Abstrakt

The evolution of the microstructure during compressive deformation of the biodegradable polymer poly(3-hydroxybutyrate) (P3HB) was investigated in-situ via X-ray diffraction using synchrotron radiation. Flow curves were measured in-situ together with X-ray profiles for several degrees of deformation. The profiles were analysed using Multi-Reflection X-ray Line Profile Analysis (MXPA) adapted by the authors for semicrystalline polymers providing lamella thickness, crystallinity, and the presence and density of dislocations as a function of the deformation. In contrast to previous investigations in ? crystallised isotactic polypropylene (?-iPP), P3HB does not exhibit a deformation induced increase of the dislocation density which suggests mechanisms other than dislocations to be involved in plastic deformation of P3HB.

Organisation(en)

Physik Nanostrukturierter Materialien

Externe Organisation(en)

Elettra Sincrotrone Trieste, TGM - Technologisches Gewerbemuseum

Anzahl der Seiten

4

DOI

https://doi.org/10.1088/1742-6596/240/1/012146

Publikationsdatum

2010

ÖFOS 2012

1030 Physik, Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/d53729db-891c-4eca-8a16-5c9064867a93