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Synthesis and properties of hyperbranched polyimides combined with silica
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SYSNO ASEP 0432323 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Synthesis and properties of hyperbranched polyimides combined with silica Author(s) Minko, E. (CZ)
Sysel, P. (CZ)
Hauf, M. (CZ)
Brus, Jiří (UMCH-V) RID, ORCID
Kobera, Libor (UMCH-V) RID, ORCIDSource Title Macromolecular Symposia. - : Wiley - ISSN 1022-1360
Roč. 295, č. 1 (2010), s. 88-93Number of pages 6 s. Action Prague Meetings on Macromolecules /73./ New Frontiers in Macromolecular Science: From Macromolecular Concepts of Living Matter to Polymers for Better Quality of Life Event date 05.07.2009-09.07.2009 VEvent location Prague Country CZ - Czech Republic Event type WRD Language eng - English Country DE - Germany Keywords hyperbranched polyimides ; silica ; sol-gel process Subject RIV CD - Macromolecular Chemistry R&D Projects IAA400500602 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z40500505 - UMCH-V (2005-2011) UT WOS 000288038700011 EID SCOPUS 78650163996 DOI 10.1002/masy.200900159 Annotation The novel hyperbranched polyimide - silica hybrid materials containing theoretically 16 wt% of an inorganic phase were prepared via a sol-gel process. An amine terminated polyimide precursor (hyperbranched polyamic acid) was prepared from commercially available monomers 4,4′,4"-triaminotriphenylmethane and 4,4′-oxydiphthalic anhydride in molar ratio 1:1. Tetramethoxysilane and/or 3-glycidoxypropyltrimethoxysilane (also used as a coupling agent) were used as silica precursors. During thermal exposition the polyimide precursor was transformed to hyperbranched polyimide and hydrolyzed alkoxy groups reacted mutually to form silica. The final products were self-standing films, whose structure was characterized by using IR and 13C and 29Si solid state NMR spectroscopy. The influence of the amount of silica and/or coupling agent on their structure and thermal properties was described. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2015
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