Difference between revisions of "Interaction Forces between Colloidal Particles in Liquid: Theory and Experiment"

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(Summary)
(Soft Matter Details)
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== Soft Matter Details ==
 
== Soft Matter Details ==
Surface Properties:
+
'''Surface Properties:'''
 +
 
 
Chemistry/soft matter, colloids, foams, stabilization
 
Chemistry/soft matter, colloids, foams, stabilization
  
Experimental Methods:
+
'''Experimental Methods:'''
 +
 
 
AFM
 
AFM
 
SFA
 
SFA
  
History:
+
'''History:'''
 +
 
 
How much does knowing the historical development help us in doing current science?
 
How much does knowing the historical development help us in doing current science?

Revision as of 19:40, 22 November 2009

Overview

  • [1] Interaction Forces between Colloidal Particles in Liquid: Theory and Experiment. Yuncheng Liang, Nidal Hilal, Paul Langston, and Victor Starov, Advances in Colloid and Interface Science 134-135, 151-166 (2007).
  • Keywords: van der Waals Forces, Electric Double Layer Forces, Solvation Forces, Hydrophobic Forces, Steric Forces, Atomic Force Microscopy, Surface Forces Apparatus

Summary

This is a review article summarizing the major findings and contributions of 158 publications. Many of the major contributions to this field were made very recently. This review article includes information on the theories of colloidal interaction forces, experiments testing them, and the historical development/breakthroughs in the field.

Timeline:


5 forces: 1) van der Waals Forces

Equation 1 Interaction energy between two spheres:

<math>V_A(D)=-\frac{A_H}{6}\left(\frac{2a^2}{D^2+4aD}+\frac{2a^2}{(D+2a)^2}+ln\left(1-\frac{4a^2}{(D+2a)^2}\right)\right)</math>

<math>A_H</math>= Hamaker Constant <math>a</math>= Sphere Radius <math>D=</math> Interparticle Distance

2) Electric Double Layer Forces

<math>V_R=\frac{128\pi a_1 a_2 n_\infty kT}{(a_1+a_2)\kappa^2} \gamma_1 \gamma_2 e^{(-\kappa h)}</math>

3) Solvation Forces

4) Hydrophobic Forces

5) Steric Forces

The second half of this review article discusses experimental evidence for or against the above five forces. There are still open questions in this field because some of the experimental evidence does not agree with the current theories.

Soft Matter Details

Surface Properties:

Chemistry/soft matter, colloids, foams, stabilization

Experimental Methods:

AFM SFA

History:

How much does knowing the historical development help us in doing current science?