Learn · Interfacial Engineering

Lecture 12 of 40week-03

Work of cohesion, adhesion, and spreading coefficient

Prof. Manigandan · IIT Ropar

Credits and licence

From
Interfacial Engineering, IIT Ropar (at NPTEL)
Licence
CC BY-NC-SA, as NPTEL states it. Non-commercial use only.
Attribution
NPTEL states: "Distributed under Creative Commons Attribution-ShareAlike / CC BY - NC - SA", beside a BY-NC-SA badge. Coordinated by IIT Madras.
Who can watch
Tweens profiles and older. How courses are placed

All the lectures

  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
  6. Young-Dupre equation; Tutorial Video
  7. Young-Laplace equation; Tutorial Video
  8. Kelvin equation; Tutorial Video
  9. Contact angle for ideal and non-ideal cases; Application of Young-Dupre Video
  10. Measurement of contact angle of surfaces at fluid-fluid interfaces Video
  11. Washburn approach; Tutorial Video
  12. Work of cohesion, adhesion, and spreading coefficient Video
  13. Girifalco-Good Fowkes equation; Tutorial Video
  14. Demonstration of force tensiometer Video
  15. Demonstration of optical tensiometer Video
  16. Shapes of micelles, critical micelle concentration (CMC); critical packing parameter (CPP) Video
  17. Thermodynamic principles of self-assembly Video
  18. Micellar-enhanced ultrafiltration (MEUF): A surfactant-based separation technique Video
  19. HLB guidelines; Debye plot Video
  20. Surface excess concepts and problem solving Video
  21. Gibbs adsorption isotherm equation Video
  22. Deposition of Langmuir Blodgett (LB) films;Adsorption from solution Video
  23. Demonstration of double barrier LB deposition technique Video
  24. Emulsion and microemulsion; Application of microemulsion Video
  25. Demonstration of emulsification using several emulsifying devices Video
  26. Demonstration of particle size analyzer Video
  27. Demonstration of particle/droplet tracking using an inverted microscope Video
  28. Introduction to colloids Video
  29. Understanding Intermolecular forces Video
  30. van der Waals force Video
  31. Lifshitz approach Video
  32. Electrical double layer (EDL) interaction (Helmholtz) Video
  33. Gouy-Chapman EDL Model Video
  34. Gouy-Chapman-Stern EDL model Video
  35. Overlapping double layer interaction Video
  36. Derjaguin approximation; DLVO forces of interactions Video
  37. Force-measuring techniques: Direct and indirect measurements Video
  38. Steric (Polymer-mediated) forces Video
  39. Electrokinetic phenomena Video
  40. Demonstration of zeta potential measurements Video