Lecture 18: Gibb’s Adsorption Equation and Surface Tension Curves

In the first lecture of Chapter 7, we discussed essential structural characteristics and categories of surfactants, synthesis approaches, nomenclature, applications, and the International surfactant market. In this, the second lecture, we discuss how surfactants behave in water. We begin with Gibb’s adsorption equation, which we will use to gauge surfactant adsorption efficiency and effectiveness at the air-water interface. We will also briefly take up the topic of adsorption kinetics.