caa a22 4500 475763793 CHVBK 20180406123559.0 cr unu---uuuuu 170329e20000901xx s 000 0 eng 10.1007/s003960000349 doi (NATIONALLICENCE)springer-10.1007/s003960000349 Microgravity experiments on colloidal crystallization of silica spheres in the presence of sodium chloride [Elektronische Daten] [A. Tsuchida, K. Taguchi, E. Takyo, H. Yoshimi, S. Kiriyama, T. Okubo, M. Ishikawa]  Rate coefficients (k) in the colloidal crystallization of monodispersed silica spheres in the presence of sodium chloride are studied in microgravity achieved by parabolic flights of an aircraft. Time-resolved reflection spectroscopy is made with a continuous circulating-type stopped-flow cell system. The k values decrease as the salt concentration increases both at 0 and 1 G and those in microgravity are smaller than those in normal gravity by 16% (maximum), especially in water and in the presence of a small amount of the salt lower than 2 × 10−6 mol/l. The rates in flight at 1 G are larger by 15% (maximum) compared with those at 1 G on the ground. The k values obtained at 0 G, 1 G in flight and 1 G on the ground agree excellently with each other for the suspensions with 3 × 10−6 and 4 × 10−6 mol/l sodium chloride. Disappearance of the downward diffusion of spheres and no convection of the suspensions are important for retardation in microgravity. Springer-Verlag Berlin Heidelberg, 2000 Key words Colloidal crystallization kinetics nationallicence Microgravity experiments nationallicence Salt effect nationallicence Reflection spectroscopy nationallicence Tsuchida A. Department of Applied Chemistry Faculty of Engineering 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 Faculty of Engineering Gifu University, Yanagido 1-1 Gifu 501-1193, Japan e-mail: okubotsu@apchem.gifu-u.ac.jp Fax: +81-58-2932628, JP aut Takyo E. Department of Applied Chemistry Faculty of Engineering Gifu University, Yanagido 1-1 Gifu 501-1193, Japan e-mail: okubotsu@apchem.gifu-u.ac.jp Fax: +81-58-2932628, JP aut Yoshimi H. Department of Applied Chemistry Faculty of Engineering Gifu University, Yanagido 1-1 Gifu 501-1193, Japan e-mail: okubotsu@apchem.gifu-u.ac.jp Fax: +81-58-2932628, JP aut Kiriyama S. Department of Applied Chemistry Faculty of Engineering Gifu University, Yanagido 1-1 Gifu 501-1193, Japan e-mail: okubotsu@apchem.gifu-u.ac.jp Fax: +81-58-2932628, JP aut Okubo T. Department of Applied Chemistry Faculty of Engineering 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/s003960000349 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s003960000349 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tsuchida A. Department of Applied Chemistry Faculty of Engineering 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 Faculty of Engineering 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- Takyo E. Department of Applied Chemistry Faculty of Engineering 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- Yoshimi H. Department of Applied Chemistry Faculty of Engineering 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- Kiriyama S. Department of Applied Chemistry Faculty of Engineering 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- Okubo T. Department of Applied Chemistry Faculty of Engineering 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