Preparation and applications of novel fluoroalkyl end‐capped vinyltrimethoxysilane oligomer/hydroxyapatite nanocomposites |
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| Authors: | Hiroki Takashima Ken‐ichi Iwaki Katsuhisa Takishita Hideo Sawada |
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| Affiliation: | 1. Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Bunkyo‐cho, Hirosaki 036‐8561, Japan;2. Ishihara Chemical Co., Ltd., 5‐26 Nishiyanagihara, Hyogo‐ku, Kobe 652‐0806, Japan |
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| Abstract: | Novel fluoroalkyl end‐capped vinyltrimethoxysilane oligomer/hydroxyapatite (HAp) nanocomposites were prepared by the reaction of calcium nitrate tetrahydrate and phosphoric acid in the presence of the corresponding oligomer. These fluorinated oligomer/HAp composites thus obtained are nanometer size‐controlled fine particles (83–173 nm), and were found to exhibit good dispersibility in methanol, ethanol, and isopropyl alcohol. These fluorinated HAp nanocomposites were applied to the surface modification of glass and poly(methyl methacrylate) (PMMA) to exhibit good hydro‐ and oleophobic characteristics imparted by fluorine on their surface. In addition, the surface structural changes of the modified polyethylene terephtalate and PMMA films treated with these fluorinated nanocomposites before and after soaking in a simulated body fluid (SBF) were analyzed by using SEM, XRD, and EDX to observe the formation of spherical HAp deposits on the surface. Copyright © 2009 John Wiley & Sons, Ltd. |
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| Keywords: | fluorinated oligomer hydroxyapatite composites dispersibility surface modification hydro‐ and oleophobicity XRD SEM EDX AFM simulated body fluid (SBF) |
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