Course Details

Subject {L-T-P / C} : CH6231 : 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 micellar formation. Electrical phenomena at interfaces (Electrokinetic phenomena, Electrical double layer). Emulsion and micro-emulsion.
Application: General applications, Enhanced petroleum recovery, Super hydrophobic and self cleaning surfaces, Novel fabrication of nanostructured particles.
Measurement techniques of surface tension, Contact angle, Zetapotential, Particle size.

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.

Essential Reading

  1. Jacob Israelachvili, Intermolecular and Surface Forces, Elsevier Inc., New York , 2011
  2. D. J. Shaw, Surfactants and Interfacial Phenomena, Wiley-Interscience Publication, New York , 2004

Supplementary Reading

  1. Adamson, A. W. Gast, A. P. Physical Chemistry of Surfaces, Wiley-Interscience, New York , 1997
  2. Tharwat F. Tadros, Basic Principles of Interface Science and Colloid Stability, De Gruyter , 2017

Journal and Conferences

  1. Langmuir. Collids and Insterface Science