PROCESS AND APPARATUS FOR PHYSICAL-CHEMICAL ANALYSIS BASED ON THE CONTROL OF INTERFACE TENSIONS

摘要

the invention relates to a process and a device for analysing the behaviour of a fluid / fluid interface, especially in the presence of acifs surfaceactive agents.according to the invention uses a blood pressure monitor based on the principle of the last pending, it enslaves the amount of liquid injected in the drop in the value of the interfacial tension is calculated, the volume of the drop is formed as the voltage interf aciale tends to decrease.we will provide a mechanism for the formation of a bead (30); a means for acquiring an image of the drop; a means of extraction of the contour of the drop (40); and a means (50) for the calculation of the interfacial tension from the shape and dimensions of the pattern; and a means for regulating (60).the method uses a method of rapid measurement of interfacial tension, using all the points of the contour of the drop, and to obtain a value in less than one second with a micro computer.