Development of Measurement Technique for Soret Coefficient and Themodiffusion Coefficient of Ternary Systems by Soret Forced Rayleigh Scattering Method with Two Probing Lasers of Different Wavelengths

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  • Matsuura Hiroaki
    School of Integrated Design Engineering, Graduate School of Science and Technology, Keio University
  • Nagasaka Yuji
    Dept. of System Design Engineering, Fac. of Science and Technology, Keio University

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Other Title
  • 2波長観察用レーザーを利用したソーレー強制レイリー散乱法による3成分系のソーレー係数・熱拡散係数測定法の開発
  • 2 ハチョウ カンサツヨウ レーザー オ リヨウ シタ ソーレー キョウセイ レイリー サンランホウ ニ ヨル 3 セイブンケイ ノ ソーレー ケイスウ ・ ネツ カクサン ケイスウ ソクテイホウ ノ カイハツ

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Abstract

<p>For the measurement of the Soret coefficient and the thermodiffusion coefficient in ternary systems, we have developed the working equations and the experimental setup based on the holographic grating technique which we call the Soret forced Rayleigh scattering (SFRS) method. Introducing another probing laser of the different wavelength enables to evaluate the mass transport of the two independent components in the ternary systems. As the wavelengths of the probing lasers, λ = 403 nm and λ = 639 nm have been selected. The experimental setup has been validated by the measurement of the benchmark systems composed of tetralin, isobutylbenzene, and dodecane. We applied the SFRS method to the measurement of the ternary polymer solutions of cellulose acetate butyrate (CAB)/styrene/2-butanone. The Soret coefficient and the thermodiffusion coefficient of the ternary polymer solutions have been shown for the first time.</p>

Journal

  • Netsu Bussei

    Netsu Bussei 31 (2), 89-96, 2017

    JAPAN SOCIETY OF THERMOPHYSICAL PROPERTIES

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