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Course10310657040 lectures

Interfacial Engineering

Prof. Manigandan · IIT Ropar

Start with lecture 1 At NPTEL

Lectures

week-01

  1. Introduction to interfaces Video
  2. Importance of surface; Application of interfaces Video
  3. Basics of classical and emerging tools Video
  4. Concepts of capillarity and surface tension (ST) and measurement of ST and contact angle Video
  5. Overview of various surface tension measurement techniques Video

week-02

  1. Young-Dupre equation; Tutorial Video
  2. Young-Laplace equation; Tutorial Video
  3. Kelvin equation; Tutorial Video
  4. Contact angle for ideal and non-ideal cases; Application of Young-Dupre Video
  5. Measurement of contact angle of surfaces at fluid-fluid interfaces Video

week-03

  1. Washburn approach; Tutorial Video
  2. Work of cohesion, adhesion, and spreading coefficient Video
  3. Girifalco-Good Fowkes equation; Tutorial Video
  4. Demonstration of force tensiometer Video
  5. Demonstration of optical tensiometer Video

week-04

  1. Shapes of micelles, critical micelle concentration (CMC); critical packing parameter (CPP) Video
  2. Thermodynamic principles of self-assembly Video
  3. Micellar-enhanced ultrafiltration (MEUF): A surfactant-based separation technique Video
  4. HLB guidelines; Debye plot Video
  5. Surface excess concepts and problem solving Video

week-05

  1. Gibbs adsorption isotherm equation Video
  2. Deposition of Langmuir Blodgett (LB) films;Adsorption from solution Video
  3. Demonstration of double barrier LB deposition technique Video
  4. Emulsion and microemulsion; Application of microemulsion Video
  5. Demonstration of emulsification using several emulsifying devices Video

week-06

  1. Demonstration of particle size analyzer Video
  2. Demonstration of particle/droplet tracking using an inverted microscope Video
  3. Introduction to colloids Video
  4. Understanding Intermolecular forces Video
  5. van der Waals force Video

week-07

  1. Lifshitz approach Video
  2. Electrical double layer (EDL) interaction (Helmholtz) Video
  3. Gouy-Chapman EDL Model Video
  4. Gouy-Chapman-Stern EDL model Video
  5. Overlapping double layer interaction Video

week-08

  1. Derjaguin approximation; DLVO forces of interactions Video
  2. Force-measuring techniques: Direct and indirect measurements Video
  3. Steric (Polymer-mediated) forces Video
  4. Electrokinetic phenomena Video
  5. Demonstration of zeta potential measurements Video

Syllabus and materials

At NPTEL, as the course publishes them.

Credits and licence

Institution
IIT Ropar
Department
Chemical Engineering
Teacher
Prof. Manigandan
Level
Undergraduate
Language
English
Subjects
Chemistry, Engineering
Source
NPTEL
Licence
CC BY-NC-SA, as NPTEL states it. Non-commercial use only. NPTEL's terms
Attribution
NPTEL states: "Distributed under Creative Commons Attribution-ShareAlike / CC BY - NC - SA", beside a BY-NC-SA badge. Coordinated by IIT Madras.
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