Course Details

Subject {L-T-P / C} : CH4213 : Colloidal and Interfacial Science and Engineering {3-0-0 / 3}
Subject Nature : Theory
Coordinator : Prof. Santanu Paria


General introduction of colloids, interfaces, surfactants, and micellization. Intermolecular forces, Van der Waals forces (Keesom, Debye, and London interactions), Colloidal systems and colloidal stability (van der Waals attraction and potential energy curves), Brownian motion and Brownian flocculation. Surface and interfacial tension and surface free energy, Surface tension for curved interfaces, Surface excess and Gibbs equation. Theory of surface tension and contact angle, and wetting.Thermodynamics of interfaces, thermodynamics of micelle and mixed micellarformation.Electrical phenomena at interfaces (Electrokinetic phenomena, Electrical double layer).

Course Objectives

  1. This course will provide a comprehensive overview on Colloids and Interfacial Engineering. Interfacial phenomena and colloidal systems have a wide range of application areas such as chemical, pharmaceutical, metallurgy, biotechnology, electronics and so on. Due to the interdisciplinary nature and wide applications in different areas, it is highly essential to give some basic idea on this subject

Course Outcomes

(1) Development of the concept of interfacial phenomena in chemical engineering.
(2) Development of knowledge on interfacial phenomena to solve the practical chemical engineering problems.
(3) Understanding the different forces involved in interfacial phenomena.
(4) Understanding of the importance of the surfactants in the interfacial phenomena.

Essential Reading

  1. P. C. Hiemenz, and R. Rajagopalan, Principle of colloid and surface chemistry, 3rd edition, MercelDekher , 1997
  2. D. J. Shaw, Colloid & Surface Chemistry, Butterworth Heinemann , 1992

Supplementary Reading

  1. M. J. Rosen, Surfactants and Interfacial Phenomena, Wiley-Interscience Publication , 2004
  2. Adamson, A. W. Gast, A. P., Physical Chemistry of Surfaces,, Wiley-Interscience , 1997.