Self-assembling process of zirconium oxide suspension induced by vaporization of volatile solvents |
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| Authors: | Hiroyuki Takeno Shin Nakazato Toshiaki Dobashi Masahiro Nobe Atsumi Wakabayashi |
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| Institution: | (1) Department of Biological and Chemical Engineering, Faculty of Engineering, Gunma University, Kiryu Gunma, 376-8515, Japan;(2) Advanced Materials Division, Sumitomo Osaka Cement Co. Ltd., 585, Toyotomi-cho, Funabashi Chiba, 274-8601, Japan |
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| Abstract: | We investigated the self-assembling processes of solutions of poly(vinyl methyl ether) in mixed solvents of 2-butanone and
water with and without zirconium oxide (ZrO2) particles with average size of 75 nm during vaporization of the solvents by means of optical microscopy. The self-assembling
processes can be classified into three regimes: (1) early stage (nucleation and growth regime), (2) intermediate stage (regularly
arranged regime), and (3) late stage (aggregation and coalescence regime). In the intermediate stage, the water droplets,
including the ZrO2 particles, were regularly arranged with an almost constant spacing. The mechanism of the self-assembling processes is discussed
on the basis of experimental results.
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| Keywords: | Self-assembling process Nanoparticles Hexagonally ordered array Optical microscopy Nucleation |
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