| Autor: |
Ricardo Keitel Donato, Libor Matjka, Henri S. Schrekker, Josef Pleštil, Alexander Jigounov, Jii Brus, Miroslav Šlouf |
| Zdroj: |
Journal of Materials Chemistry; Aug2011, Vol. 21 Issue 36, p13801-13810, 10p |
| Abstrakt: |
This work addresses the use of ionic liquids (ILs) as additives for formation of epoxy-silica nanocomposites, viathe simultaneous solâgel 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-3-methylimidazolium tetrafluoroborate ionic liquid together with HCl as an acid catalyst promotes both hydrolysis and condensation in the solâgel 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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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