Preparation of novel, nanocomposite stannoxane-based organic-inorganic epoxy polymers containing ionic bonds

0372985 - ÚMCH 2012 RIV US eng J - Článek v odborném periodiku
Strachota, Adam - Ribot, F. - Matějka, Libor - Whelan, P. - Starovoytova, Larisa - Pleštil, Josef - Steinhart, Miloš - Šlouf, Miroslav - Hromádková, Jiřina - Kovářová, Jana - Špírková, Milena - Strachota, Beata
Preparation of novel, nanocomposite stannoxane-based organic-inorganic epoxy polymers containing ionic bonds.
Macromolecules. Roč. 45, č. 1 (2012), s. 221-237. ISSN 0024-9297. E-ISSN 1520-5835
Grant CEP: GA AV ČR IAA400500701; GA ČR GAP108/11/2151
Výzkumný záměr: CEZ:AV0Z40500505
Klíčová slova: stannoxane * organic-inorganic hybrid * epoxy
Kód oboru RIV: CD - Makromolekulární chemie
Impakt faktor: 5.521, rok: 2012

Nanocomposites of epoxies with a novel filler, amino-functional butyltin oxide cage (stannoxane), were prepared and characterized. The nanofiller displays a promising antioxidizing effect, besides mechanical matrix reinforcement. The reinforcement can be assigned to physical interactions among the polymer bonded nanofiller. Moreover, the stannoxane cage undergoes a rearrangement to larger poly amino-functional nano-objects at higher temperatures, which highly reduces its extractability: it is practically not extractable from the nanocomposites in most cases. Only a few weight percent of stannoxane are needed to achieve an optimal anti-oxidizing effect. The nanocomposite synthesis, stannoxane reactivity and dispersion (morphology via TEM and SAXS), as well as the nanofiller effect on mechanical properties (DMTA) and on thermal stability are discussed. A brief comparison is drawn between the stannoxanes and the previously investigated POSS nanofiller.
Trvalý link: http://hdl.handle.net/11104/0006870