Towards Controlling of Surfactant Foam Production in Space

DOI:10.15011//jasma.34.340114
Int. J. Microgravity Sci. Appl. 2017p340114
Author
Mehrafsoon FAQIRYAR , Yui MASUMOTO , Ko URUSHIBARA , Arisa YAMADA , Akane ISE and Yoshihito MORI
Organization
Department of Chemistry and Biochemisrty, Division of Advanced Sciences, Graduate School of Humanities and Sciences, Ochanomizu University,2Department of Chemistry, Faculty of Science, Ochanomizu University
Abstract
The foam production in space has been studied. The foam was generated by mixing surfactant-sugar solution with air in a porous media. The produced foam on the ground moved linearly, but it moved spirally under the microgravity. To explain the results, the foam production along the gravity was examined in a wide range of experimental conditions. In the foam motion state diagram dependent on air pump and liquid pump flow rates, the area of the spiral motion located at the higher air flow rate side and the area of the linear motion located at the lower air flow rate side. In higher surfactant concentrations the area of the spiral motion expanded by increasing the viscosity of the solution. On the other hand, in lower surfactant concentrations the area of the spiral motion shrank by increasing the viscosity of the solution.
Keyword(s)
Foam motion, Linear motion, Spiral motion, Gravity, Viscosity
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Received 29 December 2015, Accepted 31 December 2016, Published 31 January 2017

© The Japan Society of Microgravity Applicaiton

この投稿文は次の言語で読めます: Japanese

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