A Different Silica Surface : Radical Oxidation of Poly(methylsilsesquioxane) Thin Films and Particles (Tospearl)

Surfaces that exhibit the reactivity of silica toward surface modification (silanol condensation) were prepared by treating thin films and particles of poly(methylsilsesquioxane) with aqueous potassium persulfate at elevated temperature. Parallel experiments were carried out using a highly cross-lin...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 36(2020), 34 vom: 01. Sept., Seite 10110-10119
1. Verfasser: Saito, Yu (VerfasserIn)
Weitere Verfasser: Wang, Liming, Zheng, Peiwen, Bian, Pei, McCarthy, Thomas J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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520 |a Surfaces that exhibit the reactivity of silica toward surface modification (silanol condensation) were prepared by treating thin films and particles of poly(methylsilsesquioxane) with aqueous potassium persulfate at elevated temperature. Parallel experiments were carried out using a highly cross-linked poly(dimethylsiloxane). Advancing (θA) and receding (θR) water contact angles for all of these oxidized surfaces were θA/θR = ∼10/∼0°, and these low values remain unchanged for months. Reactions of these silica-like surfaces with a range of functional silane reagents indicate that the surface silanol concentration is sufficient to prepare covalently attached monolayers of similar surface density to those prepared using silicon wafers as substrates 
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700 1 |a Zheng, Peiwen  |e verfasserin  |4 aut 
700 1 |a Bian, Pei  |e verfasserin  |4 aut 
700 1 |a McCarthy, Thomas J  |e verfasserin  |4 aut 
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