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Bayreuth 1998 – scientific programme

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PO: Polymerphysik

PO 7: Poster: Oberflächen und Grenzflächen

PO 7.2: Poster

Wednesday, March 11, 1998, 15:25–17:15, P1

A cross-sectional preparation method for morphological investigations on layered polymer interfaces — •Joachim Loos1, Frank Katzenberg2, and J"urgen Petermann21Dutch Polymer Institute, Technical University of Eindhoven, NL — 2Lehrstuhl f"ur Werkstoffkunde, Universit"at Dortmund

The epitaxial (oriented) crystallization of binary blends of isotactic polypropylene (iPP) / high density polyethylene (HDPE) or HDPE / linear low density polyethylene (LLDPE) have received considerable attention in recent years. It is the purpose of this poster to introduce a new preparation technique for the investigation of epitaxial polymer interfaces. Investigations on cross-sectionally prepared samples result in further details of the morphology of epitaxial polymer interfaces. It will be showed in both cases, HDPE/iPP and LLDPE/HDPE, that the epitaxial layer is aligned perpendicular to the substrate for long distances (100 nm to 1 µ m), and that the crystalite thickness of the LLDPE lamellae has adopted the thickness of the HDPE crystals at the interface.

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