The role of organic modification of layered nanosilicates on mechanical and surface properties of organic–inorganic coatings

0359230 - ÚMCH 2012 RIV US eng J - Journal Article
Špírková, Milena - Duchek, P. - Strachota, Adam - Poreba, Rafal - Kotek, Jiří - Baldrian, Josef - Šlouf, Miroslav
The role of organic modification of layered nanosilicates on mechanical and surface properties of organic–inorganic coatings.
Journal of Coatings Technology and Research. Roč. 8, č. 3 (2011), s. 311-328. ISSN 1547-0091. E-ISSN 1935-3804
R&D Projects: GA AV ČR(CZ) IAAX08240901
Institutional research plan: CEZ:AV0Z40500505
Keywords : organic–inorganic nanocomposite * coating * sol–gel process
Subject RIV: JI - Composite Materials
Impact factor: 1.121, year: 2011

The effect of alcohol- and amino-functional compatibilizers in nanocomposites of organic–inorganic (O–I) matrices with layered nanofillers (LN) was studied. The alcohol-functional compatibilizers are shown to have a marked influence on morphology, surface- and mechanical properties of the coatings prepared, in spite of the very small amount of both filler and compatibilizer (together 0.5 wt%). The studied O–I matrices were polyepoxy-functional polysiloxanes cured with organic diamines. Two commercial clays were used as LN in the concentration of 0.5 wt%: natural montmorillonite (Cloisite Na, abbreviated MNa) and Bentonite for water systems (BW). These clays were compatibilized by three hydroxylcontaining substances: Polyethylene glycol 4000, TWEEN 80, and tris(hydroxymethyl)aminomethane (TRIS).
Permanent Link: http://hdl.handle.net/11104/0006436