Silicone-containing hybrid polymer dispersions designed for coating applications
|Janusz Kozakiewicz , Maria Zielecka , Anita Koncka-Foland , Elżbieta Bujnowska , Anna Szulc|
Industrial Chemistry Research Institute (ICRI), Rydygiera 8, Warszawa 01-793, Poland
Silicone-containing hybrid polymer systems have been attracting attention of researchers for last couple of years since silicones can provide a set of unique properties to the hybrid material, including: improved low temperature elasticity, heat resistance, specific surface properties and excellent water resistance combined with gas and water vapour permeability. Novelty materials of this kind have been introduced to the market and are now being used widely in the industrial applications, including coatings. The macro-scale properties of hybrid materials that represent combination of organic polymers and silicones can be tailored to the demands of particular application through designing of the specific micro- or even nano-scale architecture of the hybrid system. In this paper, the results of studies on novel aqueous silicone-containing hybrid polymer dispersions of specific architecture designed for coatings will be presented. Dispersions were synthesized either via polymerization of acrylic monomers in aqueous polysiloxaneurethane anionic dispersions prepared from the mixture of polysiloxanediol, saturated polyol and unsaturated polyol and cycloaliphatic diisocyanate or via polymerization of silicone monomers in commercially available acrylic polymer dispersions The effect of structural parameters of the hybrid polymers which constituted dispersion particles on the properties of dispersions, films and coatings was studied and it was found that they significantly influenced by the share and kind of silicone component. More detailed studies of surface properties of the coatings using wettability determinations (DCA, SFE), ESCA, and AFM techniques revealed self-assembling of the surface layers depending on the chemical composition of the polymers constituting the hybrid system.
Presentation: invited oral at E-MRS Fall Meeting 2005, Symposium E, by Janusz Kozakiewicz
See On-line Journal of E-MRS Fall Meeting 2005
Submitted: 2005-05-10 12:09 Revised: 2009-06-07 00:44