METHOD AND EQUIPMENT FOR MEASURING CRITICAL MICELL CONCENTRATION(CMC)

摘要

PURPOSE: To provide method and equipment for measuring the transport number simultaneously with the critical micell concentration by measuring the liquid junction potential at the interface formed by a glass sleeve. ;CONSTITUTION: Surfactant ions form an association at a specified concentration or above and the mobility thereof varies significantly before and after a CMC value. Corresponding variation of liquid junction potential is observed as a function of activator ion concentration thus determining a CMC value and the transport number of activator ion. More specifically, the surfactant ion concentration of a surfactant solution S₁ is fixed below the CMC value and then the surfactant ion concentration of a surfactant solution S₂ is varied to induce a liquid junction potential in a slit B which is measured by means of a voltmeter V through a metal electrode A.;COPYRIGHT: (C)1995,JPO