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Microstructure and Indentation Behaviour of Polyhedral Oligomeric Silsesquioxanes‐Modified Thermoplastic Polyurethane Nanocomposites
Author(s) -
Lach Ralf,
Michler Goerg Hannes,
Grellmann Wolfgang
Publication year - 2010
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200900393
Subject(s) - materials science , thermoplastic polyurethane , differential scanning calorimetry , nanocomposite , microstructure , composite material , small angle x ray scattering , polymer chemistry , transmission electron microscopy , silsesquioxane , crystallization , polymer , chemical engineering , elastomer , scattering , nanotechnology , physics , thermodynamics , engineering , optics
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.