乳化に関する研究-1-界面粘度と乳化関連現象の相関性

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When nonionics, especially polyoxypropylene-polyoxyethylene blockpolyether type of high molecular weight, are used as emulsifiers, the most important factor affecting substantial emulsion stability seems to be mechanical strength (rheological property) of the interfacial film. Hence, authors studied the relation betwen interfacial viscosity and stability of practical emulsion, energy of activation for emulsion coalescence, and coalescent rate of a single oil drop or an aqueous drop to the same phase.<BR>It was found in the case of a nonionic PL-104 emulsifier that about 4 hr are necessary to accomplish nearly complete adsorbed film at benzene-water interface.<BR>It was also found that there exist good correlation between emulsion stability and activation energy, and between interfacial viscosity and coalescent rate of drops in the case of benzene-water system.<BR>However, no correlation existed between activation energy (or emulsion stability) and interfacial viscosity (or coalescent rate of drops). This seems to be due to difference of interfacial conditions between them.
日本油化学会の論文