Liquid-Liquid Dispersion on Mechanical Agitation. Effect of the Viscosity Ratio μa/μ_c on the Energy Efficiency of Agitation

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This paper deals with the effect of the ratio of viscosities of dispersed and continuous phases, μa/μ_c, on the energy efficiency of agitation. The viscosity ratios used were 0.836,0.271,0.0992,0.0280 and 0.00133. The photographs of drops were taken by a microscopic method and the values of torque were measured with a rotary torque meter. Since, the values of mean diameter and particle size distribution were calculated, and further the energy efficiency of agitation was evaluated. And then, the following results were obtained. (1) When the viscosity ratio μa/μ_c became smaller than unity, N_<We> for each revolution number increased more larger values. (2) The energy efficiency of agitation gradually decreased according as the values of d_<sv> became smaller and smaller.
公益社団法人日本薬学会の論文
1976-03-25