滴体积法测定表面活性剂溶液临界胶束浓度的新方法

Measurement of Critical Micelle Concentration for Surfactant Solution by the Drop-Volume Method

用滴体积法测定表面活性剂水溶液的表面张力，从而确定其临界胶束浓度的方法，数据处理较繁琐，而且缺乏准确性．本文通过研究落滴体积与表面活性剂浓度的关系，提出了一种简便、准确测定表面活性剂溶液临界胶束浓度的新方法，并对该方法进行了实验验证．

easurement of critical micelle concentration(cmc) by drop volume technique for surfactant solution is a complicated data process as indicated by some reports.This paper proposes a new method which is based on the linear relationship between drop volume and natural logarithm of concentration of bulk solution as the latter close to cmc.By plotting volume vs. natural logarithm of concentration,cmc can be simply established from the intersection of two lines.