Microstructure and Indentation Behaviour of Polyhedral Oligomeric Silsesquioxanes-Modified Thermoplastic Polyurethane Nanocomposites

✍ Scribed by Ralf Lach; Goerg Hannes Michler; Wolfgang Grellmann

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 713 KB
• Volume: 295
• Category: Article
• ISSN: 1438-7492
• DOI: 10.1002/mame.200900393

✦ Synopsis

Abstract

Morphological analyses of nanocomposites based on TPU and polyhedral oligomeric silsesquioxanes (POSS) was performed using different techniques (transmission electron microscopy, small‐ and wide‐angle X‐ray scattering, differential scanning calorimetry) as a function of molecular weight of poly(ethylene glycol) (PEG) and PEG/POSS mol ratio. A strong interdependence in crystallisation behaviour between the two (POSS and the soft segments of TPU) specified to be able to crystallise in TPU/POSS was found. The mechanical properties determined by using recording microindentation techniques at room temperature were significantly improved by POSS for two material formulations.

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