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Hierarchically structured polymer blends based on silsesquioxane hybrid nanocomposites with quaternary ammonium units for antimicrobial coatings

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Bogdana Simionescu, Irina-Elena Bordianu, Magdalena Aflori, Florica Doroftei, Mihai Mares, Xenia Patras, Alina Nicolescu, Mihaela Olaru

Editorial: Materials Chemistry and Physics, Volume 134, Issue 1, p.190–199, 2012.

Rezumat:

The paper reports the first study on hierarchical assemblies (nanofibrillar micelles confined within semi-cylindrical shells) with silsesquioxane and quaternary ammonium units obtained through polymer blending intended for antimicrobial/antifungal stone coatings. The formation of hierarchical structures on solid surfaces is due to the multiple intermolecular ionic interactions, intermolecular Van der Waals and hydrophobic interactions acting among the component molecules. Their antimicrobial/antifungal properties toward the Gram-negative bacteria, Escherichia coli, Gram-positive bacteria, Staphylococcus aureus, and Candida albicans fungus were determined in aqueous solution and were found to be strongly dependent of the topographical features of the coating.

Cuvinte cheie: Evaporation; Nanostructures; Microporous materials; Coatings

URL: http://www.sciencedirect.com/science/article/pii/S0254058412002179