Berlin 2012 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 11: New Instruments and Methods
CPP 11.5: Vortrag
Dienstag, 27. März 2012, 10:45–11:00, C 243
Infrared Transition Moment Orientational Analysis on semi-crystalline polyethylene films — •Wilhelm Kossack1, Periklis Papadopoulos2, Matthew Parkinson3, Floran Prades3, and Friedrich Kremer1 — 1Universität Leipzig, Linnéstrasse 5, 04103 Leipzig, Germany — 2Max Planck Institute for Polymer Research, Postfach 3148, 55021 Mainz, Germany — 3Borealis Polyolefine GmbH, St.-Peter-Strasse 25, 4021 Linz, Austria
The recently developed method of Infrared-Transition-Moment-Orientational-Analysis (IR-TMOA) is based on concurrent measurements of the transmission in dependence on polarisation of the IR light and on the inclination of the sample with respect to the optical axis. This enables one to determine for the different molecular moieties of the studied material the full order parameter tensor and its orientation with respect to the sample coordinate system. The analysed films, made by a blown film process, show only low ordered crystalline regions (order parameters <0.3) and an even less ordered amorphous matrix (Kossack, et al., doi:10.1016/j.polymer.2011.10.051). The method provides a quantitative insight into the correlation of production parameters and microscopic structure playing a key role to improve the properties of polyolefin fims.