Estimate of the Fluid Force Related to Washing Mechanism -Analysis of Viscoelasticity for Aqueous Solutions of Surfactant and Mechanism for Soil Removing -

与洗涤机理相关的流体力的估计 -表面活性剂水溶液的粘弹性分析和去污机理 -

• 批准号: 13680110
• 负责人: AMAKI Keiko
• 金额: $ 2.37万
• 依托单位: IWATE University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13680110/
• 关键词: Aqueous Solution of Surfactant; Washing; Fluid Force; Emulsion; Analysis of Pictures; ミセル; 抗力

The purpose of this research is to investigate the effect of fluid force on detergency. That is to measure the deformation of surfactant micelles when aqueous solutions of surfactant is flowing. But micelles are too small to see, so I used some oil-in-water type (O/W) and water-in-oil type (W/O) emulsions made of oleic acid and pure water (these are as a bigger model of surfactant micelles). The ratio of height to width was calculated using by the observation system of heating, shear flowing.The following results are obtained. The ratio of height to width was increased (>1), it means the shape of drops deformed to elliptic sphere, when every emulsions were flowing. And the flow stopped, it was decreased immediately (almost=1), the shape returned to sphere. For all emulsions used, the ratio of height to width increases with an increase in low shear rate. But the ratio decreases at some high shear rate, and it increases again with higher shear rate. There is room for further investigation on this point.

本研究的目的是探讨流体力对去污力的影响。即测量表面活性剂水溶液流动时表面活性剂胶束的变形。但胶束太小而看不见，所以我使用了一些由油酸和纯水制成的水包油型(O/W)和油包水型(W/O)乳状液(这是表面活性剂胶束的较大模型)。利用加热剪切流观测系统计算了高宽比，得到了以下结果。乳状液的高宽比增大(&gt；1)，即乳状液在流动时，液滴的形状变为椭圆形。停止流动，立即减少(几乎=1)，形状恢复为球形。对于所有使用的乳状液，高宽比随着低剪切速率的增加而增加。但在较高的剪切速率下，这一比例会减小，然后随着剪切速率的升高，比例又会增大。在这一点上还有进一步调查的空间。