Number of the records: 1

The multifunctional role of ionic liquids in the formation of epoxy-silica nanocomposites

SYSNO ASEP	0363254
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	The multifunctional role of ionic liquids in the formation of epoxy-silica nanocomposites
Author(s)	Donato, Ricardo Keitel (UMCH-V)_ORCID Matějka, Libor (UMCH-V)_RID Schrekker, H. S. (BR) Pleštil, Josef (UMCH-V)_RID Jigounov, Alexander (UMCH-V)_{RID, ORCID} Brus, Jiří (UMCH-V)_{RID, ORCID} Šlouf, Miroslav (UMCH-V)_{RID, ORCID}
Source Title	Journal of Materials Chemistry. - : ROYAL SOC CHEMISTRY - ISSN 0959-9428 Roč. 21, č. 36 (2011), s. 13801-13810
Number of pages	10 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	epoxy-silica nanocomposite ; ionic liquids ; sol–gel process
Subject RIV	CD - Macromolecular Chemistry
R&D Projects	IAA400500701 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ	AV0Z40500505 - UMCH-V (2005-2011)
UT WOS	000294441300013
DOI	10.1039/c1jm11752a
Annotation	This work addresses the use of ionic liquids (ILs) as additives for formation of epoxy-silica nanocomposites, via the simultaneous sol–gel process and epoxy network build-up. The application of different methylimidazolium based ILs allows controlling the silica structure and modifying interphase interaction, thus producing hybrids with diverse morphologies and improved mechanical properties. Both the anionic and cationic components of the ILs affected the hybrid formation and the final properties. The application of 1-decyl--methylimidazolium tetrafluoroborate ionic liquid together with HCl as an acid catalyst promotes both hydrolysis and condensation in the sol–gel process as well as the self-assembly ordering of the IL. This system produces a very fine hybrid morphology with well dispersed silica nanodomains and a significantly increased rubbery modulus due to physical crosslinking by the ordered domains of decyl-substituents.
Workplace	Institute of Macromolecular Chemistry
Contact	Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
Year of Publishing	2012

Number of the records: 1