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Preparation and characterization of polyurethane hybrids from reactive polyhedral oligomeric silsesquioxanes
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.
2006 (English)In: Macromolecular materials and engineering (Print), ISSN 1438-7492, E-ISSN 1439-2054, Vol. 291, no 7, 895-901 p.Article in journal (Refereed) Published
Abstract [en]

Hybrid polyester resins containing polyhedral oligomeric silsesquioxanes (POSS), and their polyurethanes were prepared using reactive POSS as a substitution for partial diol monomer. They were investigated by FT-IR, rheometry, dynamic mechanical analysis, wide-angle X-ray diffraction contact-angle measurement, atomic force microscopy, and thermogravimetric analysis, respectively. The results showed that the hybrid polyester-POSS resins had a shear thinning behaviour and the more the POSS was embedded, the stronger the shear thinning behaviour, and the higher the viscosity. Incorporation of POSS could increase the glass transition temperature and thermal stability and decrease the surface free energy of the polyurethanes. When the POSS content was relatively high, the POSS molecules in hybrid polyurethane-POSS had a strong self-assembling ability to form nanocrystalline domains.

Place, publisher, year, edition, pages
2006. Vol. 291, no 7, 895-901 p.
Keyword [en]
hybrid polyester resins, polyhedral oligomeric silsesquioxanes, polyurethanes, thermomechanical properties, epoxy networks, triblock copolymers, thermal-properties, film applications, solid-surfaces, poss, morphology, nanocomposites, resin
Identifiers
URN: urn:nbn:se:kth:diva-15895ISI: 000239512500016OAI: oai:DiVA.org:kth-15895DiVA: diva2:333937
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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