caa a22 4500 475764196 CHVBK 20180406123600.0 cr unu---uuuuu 170329e20000301xx s 000 0 eng 10.1007/s003960050033 doi (NATIONALLICENCE)springer-10.1007/s003960050033 Kinetics of colloidal alloy crystallization of binary mixtures of monodispersed polystyrene and/or colloidal silica spheres having different sizes and densities in microgravity using aircraft [Elektronische Daten] [T. Okubo, A. Tsuchida, S. Takahashi, K. Taguchi, M. Ishikawa]  Crystal growth rates in colloidal alloy crystallization of binary mixtures of monodispersed polystyrene and/or silica spheres having different sizes and densities are studied in microgravity by parabolic flights of an aircraft. The crystal growth rates are obtained by time-resolved reflection spectroscopy with a continuous circulating-type stopped-flow-cell system. The growth rates of alloy crystallization increase substantially in microgravity up to about 1.7 times those in normal gravity, which is in contrast to the retarding microgravity effect on the crystallization of single-component spheres. The disappearance of the segregation effect in microgravity is the main cause for the enhancing effect. The absence of convection of the suspension and the lack of downward sedimentation of colloidal spheres are also important. Springer-Verlag Berlin Heidelberg, 2000 Key words Colloidal alloy crystals nationallicence Crystal growth kinetics nationallicence Microgravity effect nationallicence Reflection spectroscopy nationallicence Segregation nationallicence Okubo T. Department of Applied Chemistry Gifu University, Yanagido 1-1 Gifu 501-1193, Japan e-mail: okubotsu@apchem.gifu-u.ac.jp Fax: +81-58-2932628, JP aut Tsuchida A. Department of Applied Chemistry Gifu University, Yanagido 1-1 Gifu 501-1193, Japan e-mail: okubotsu@apchem.gifu-u.ac.jp Fax: +81-58-2932628, JP aut Takahashi S. Department of Applied Chemistry Gifu University, Yanagido 1-1 Gifu 501-1193, Japan e-mail: okubotsu@apchem.gifu-u.ac.jp Fax: +81-58-2932628, JP aut Taguchi K. Department of Applied Chemistry Gifu University, Yanagido 1-1 Gifu 501-1193, Japan e-mail: okubotsu@apchem.gifu-u.ac.jp Fax: +81-58-2932628, JP aut Ishikawa M. Mitsubishi Research Institute Inc. 2-3-6 Otemachi, Chiyoda-ku, Tokyo 100-0004, Japan, JP aut https://doi.org/10.1007/s003960050033 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s003960050033 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Okubo T. Department of Applied Chemistry Gifu University, Yanagido 1-1 Gifu 501-1193, Japan e-mail: okubotsu@apchem.gifu-u.ac.jp Fax: +81-58-2932628, JP aut NATIONALLICENCE 700 1- Tsuchida A. Department of Applied Chemistry Gifu University, Yanagido 1-1 Gifu 501-1193, Japan e-mail: okubotsu@apchem.gifu-u.ac.jp Fax: +81-58-2932628, JP aut NATIONALLICENCE 700 1- Takahashi S. Department of Applied Chemistry Gifu University, Yanagido 1-1 Gifu 501-1193, Japan e-mail: okubotsu@apchem.gifu-u.ac.jp Fax: +81-58-2932628, JP aut NATIONALLICENCE 700 1- Taguchi K. Department of Applied Chemistry Gifu University, Yanagido 1-1 Gifu 501-1193, Japan e-mail: okubotsu@apchem.gifu-u.ac.jp Fax: +81-58-2932628, JP aut NATIONALLICENCE 700 1- Ishikawa M. Mitsubishi Research Institute Inc. 2-3-6 Otemachi, Chiyoda-ku, Tokyo 100-0004, Japan, JP aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer