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Preparation of Fluoroalkyl End-capped Oligomers/magnetite Nanocomposites Possessing a Good Dispersibility and Stability by Hiroaki Yoshioka; Kei-Ichi Ohnishi; Hideo Sawada is a Chemistry article available to read on EtoBox.

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Fluoroalkyl end-capped vinylphosphonic acid cooligomers-encapsulated magnetite nanocomposites were prepared by the magnetization of aqueous ferric and ferrous ions in the presence of the corresponding fluorinated cooligomers and magnetic nanoparticles under alkaline conditions. These fluorinated cooligomers magnetic composites are nanometer size-controlled very fine particles and have a good dispersibility and stability in water and traditional organic solvents. These fluorinated nanocomposites were also applied to the surface modification of poly(methyl methacrylate) to exhibit a good oleophobicity imparted by fluorine on their surface. Fluoroalkyl end-capped 2-methacryloyloxyethanesulfonic acid oligomer-encapsulated magnetite nanocomposites and fluoroalkyl end-capped 2-acrylamide-2-methylpropanesulfonic acid oligomerencapsulated magnetite nanocomposites were prepared in good isolated yields by the magnetization of iron chlorides in the presence of the corresponding oligomers and magnetic nanoparticles under similar conditions. Colloidal stability of these fluorinated nanocomposites thus obtained in water was demonstrated to become extremely higher than that of fluorinated vinylph

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Author

Hiroaki Yoshioka; Kei-Ichi Ohnishi; Hideo Sawada

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0022-1139)

Published

2007

Language

EN

Field

Chemistry (Physical Sciences)