COLL 358 |
| Atsushi Takahara, Kazuya Yamamoto, Ryosuke Matsuno, and Hideyuki Otsuka. Institute for Fundamental Research of Organic Chemistry, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 8128581, Japan |
| Novel (inorganic nanofiller/polymer) nanocomposites were prepared through direct polymer grafting reaction from the surfaces of magnetite (Fe3O4) nanoparticle (d=10 nm) and natural inorganic nanofiber imogolite. In the case of magnetite, the chemisorbed nitroxyl-mediated initiator (TEMPO-based alkoxyamine) for radical polymerization with the phosphonic acid group gave controlled polystyrene (PS) and poly(3-vinylpyridine) (P3VP) graft layers on the surface. PS-modified magnetite was dispersed in organic solvents, whereas P3VP-modified magnetite dispersed in acidic aqueous phase. On the other hand, the polymerization of methyl methacrylate (MMA) in the presence of imogolite adsorbed with phosphonic acid-modified hydroxyethyl methacrylate (P-HEMA) monomer gave a transparent PMMA nanocomposite reinforced with imogolite nanofibers. |
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Adsorption of Macromolecules at Liquid-Solid Interfaces
Division of Colloid and Surface Chemistry |