Regensburg 2007 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 7: POSTER: INTERNAL SYMPOSIUM Scattering Experiments

CPP 7.16: Poster

Montag, 26. März 2007, 16:00–18:00, Poster B

Influence of degree of branching in LLDPE on its physical properties — •Stefan Fischer¹, Dieter Meinhardt², Bernhard Rieger², and Othmar Marti¹ — ¹Institute of Experimental Physics, University of Ulm, 89069 Ulm, Germany — ²Institute of Inorganic Chemistry II, University of Ulm, 89069 Ulm, Germany

Novel metallocene catalysts allow the polymerization of linear low density polyethylene (LLDPE) with controlled molecular weight directly from ethylene without the need for (more expensive) higher alkanes [1]. The influence of the degree of branching and the molecular weight on the physical properties has been analyzed with several methods, including tensile tests, AFM (atomic force microscopy), DSC (differential scanning microscopy), WAXS (wide angle x-ray scattering) and SAXS (small angle x-ray scattering). The LLDPE samples have been compared with commercially available high and low density polyethylenes (HDPE and LDPE). The results will be presented.

[1] Dieter Meinhard, Marcus Wegner, Georgy Kipiani, Andrew Hearley, Peter Reuter, Stefan Fischer, Othmar Marti and Bernhard Rieger; JACS; submitted