Acta Phys. -Chim. Sin. ›› 1997, Vol. 13 ›› Issue (05): 395-400.doi: 10.3866/PKU.WHXB19970503
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Hu Xue-Zheng,Yu Xue-Jun,Liu Jun-Kang,Vignes-Adler M
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Abstract:
A complex solute Marangoni instability phenomena is observed by analysing the motion of a nitroethane droplet located at the surface of an aqueous solution of 2-butanol. It is shown that the motion in the first five minutes is composed of three successive phases with different dynamic properties-oscillatory, stationary and spiral. A self-induced complex mechanism is used to explain this phenomena. It is proposed that the basic origin of this instability is the transfer of the surface-active 2-butanol, but this transfer diminishes the subsurface concentration of 2-butanol in the aqueous phase and induces the restoration of the equilibrium of mutual solubility of the two solvents-nitroethane and water, which has a complex effect on this interfacial phenomena.
Key words: Interfacial instability, Marangoni effect, Interfacial tension gradient, 2-butanol;Nitroethane
Hu Xue-Zheng,Yu Xue-Jun,Liu Jun-Kang,Vignes-Adler M. Self-Induced Complex Interfacial Instability in the System of 2-Butanol/Water/Nitroethane[J].Acta Phys. -Chim. Sin., 1997, 13(05): 395-400.
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URL: http://www.whxb.pku.edu.cn/EN/10.3866/PKU.WHXB19970503
http://www.whxb.pku.edu.cn/EN/Y1997/V13/I05/395
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