Characterisation of colloidal particles - II

Preview 20:56

Introduction to forces acting on an individual colloidal particle

Preview 29:02

Introduction to interaction between colloidal particles

Preview 19:17

Application of Brownian force: Measument of diffusivity and size

Preview 27:25

Radiation used to study colloidal systems

Preview 18:08

Radiation used to study colloidal systems

Preview 46:58

Molecular origin of Van der waals forces

Preview 44:41

Vanderwaal interactions between particles

Preview 26:45

Problem on scaling of Vanderwaal interactions

Preview 13:41

Calculation of Vanderwaal's forces between semi-infinite blocks and Hamaker constant - I

Preview 27:20

Calculation of Vanderwaal's forces between semi-infinite blocks and Hamaker constant - II

Preview 16:10

Theories of Vanderwaal forces based on bulk properties and calculation of Hamaker constant using bulk properties

Preview 49:46

Effect of medium on Vanderwaal's interactions - I

Preview 23:06

Effect of medium on Vanderwaal's interactions - II

Preview 22:06

Colloid Polymer mixtures

Preview 25:48

Colloid polymer mixtures: colloid-solvent interactions & colloid-polymer interactions

Preview 14:57

Colloid polymer mixtures: Depletion flocculation

Preview 20:16

Colloid polymer mixtures: Depletion stabilisation

Preview 18:06

Depletion interactions

Preview 17:58

Steric interactions/osmotic repulsion

Preview 22:51

Tutorial problem on depletion interactions

Preview 11:14

Colloidal Interactions: Introduction to electrostatic interactions/electrical double layer interactions

Preview 16:30

Introduction to models of electrical double layer: Helmholtz model/capacitor model

Preview 16:23

Review and summary of Helmholtz model (or capacitor model) of electrical double layer

Preview 21:56

Models of electrical double layer: Diffuse double layer model/Gouy-Chapman model

Preview 25:50

Potential distribution near planar surfaces: Derivation of the Poisson-Boltzmann equation

Preview 21:34

Potential distribution near planar surfaces: Solution to the linearised Poisson-Boltzmann equation

Preview 20:30

Potential distribution near spherical surfaces: Solution to linearised Poisson-Boltzmann equation

Preview 31:19

Comparison of Capacitor model and Diffuse double layer model

Preview 15:31

Models of electrical double layer: Gouy Chapman Theory - I

Preview 25:32

Models of electrical double layer: Gouy Chapman Theory - II

Preview 15:42

Structure of Electrical double layer

Preview 22:25

Force of Repulsion between interacting surfaces

Preview 23:44

Potential Energy of repulsion between Planar double layers and DLVO Theory

Preview 30:38

Zeta Potential and Electrophoretic mobility of an ion

Preview 26:45

Electrokinetic Phenomena

Preview 23:33

Relation between Electrophoretic mobility and Zeta potential - I

Preview 37:53

Relation between Electrophoretic mobility and Zeta potential - II

Preview 34:28

Colloidal particles at interfaces:Introduction

Preview 28:18

Characterization of Particles at interface

Preview 19:55

Experimental Observations -Concept of Electrostatic interactions and Stability at interfaces

Preview 38:40

Implications from Surface energy balances & Estimation of energy required for detachment

Preview 38:20

Colloidal interactions at interface

Preview 24:08

Live Session 17-08-2021

Preview 09:30