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Epoxy-silica nanocomposite interphase control using task-specific ionic liquids via hydrolytic and non-hydrolytic sol-gel processes
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SYSNO ASEP 0450069 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Epoxy-silica nanocomposite interphase control using task-specific ionic liquids via hydrolytic and non-hydrolytic sol-gel processes Author(s) Donato, Ricardo Keitel (UMCH-V) ORCID
Perchacz, Magdalena (UMCH-V) RID
Ponyrko, Sergii (UMCH-V) RID, ORCID
Donato, Katarzyna Zawada (UMCH-V)
Schrekker, H. S. (BR)
Beneš, Hynek (UMCH-V) RID, ORCID
Matějka, Libor (UMCH-V) RIDSource Title RSC Advances. - : Royal Society of Chemistry
Roč. 5, č. 111 (2015), s. 91330-91339Number of pages 10 s. Language eng - English Country GB - United Kingdom Keywords epoxy-silica nanocomposite ; sol-gel processes ; ionic liquids Subject RIV CD - Macromolecular Chemistry R&D Projects GA14-05146S GA ČR - Czech Science Foundation (CSF) GAP108/12/1459 GA ČR - Czech Science Foundation (CSF) Institutional support UMCH-V - RVO:61389013 UT WOS 000364057000032 EID SCOPUS 84946081790 DOI 10.1039/C5RA18387A Annotation Carboxylic-functionalized task-specific imidazolium ionic liquids (carboxylic-ILs) presented selective high reactivities with epoxy-functionalized compounds, even in highly complex epoxy–silica nanocomposite systems. The carboxylic-ILs induced the in situ covalent bonding with epoxy based materials and tuning of the nanocomposites’ filler–matrix interphase when applied either via hydrolytic or non-hydrolytic sol–gel processes. Structural modifications in the carboxylic-ILs allowed fine morphology control and promoted the formation of well dispersed silica nanodomains. This approach resulted in nanocomposites with improved mechanical properties, without a negative effect on the glass transition temperature, for both rubbery and glassy epoxy–silica nanocomposite systems with a very small IL content (similar to 0.2 wt%). The best properties were achieved with the application of IL 1-carboxypropyl-3-methylimidazolium chloride, which produced a toughness increase of more than 7 times for the rubbery and almost twice for the glassy epoxy systems, when compared to their IL-free equivalents. These easy and quick procedures to produce imidazolium functionalized materials have the potential to open up a broad range of new conductive, responsive, smart and tunable reinforced materials. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2016
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