ISSN:
0392-6737
Keywords:
Colloids
;
Brillouin and Rayleigh scattering
;
General theory of equations of state and phase equilibria
;
Conference proceedings
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Summary Equilibrium sedimentation profiles of concentrated suspensions of charged optically anisotropic colloids are accurately determined by performing depolarized light scattering measurements. From the data we derive the osmotic pressure πvs. the particle volume fraction Φ. The π(Φ) values obtained with strongly screened colloids are in excellent agreement with the predicted hard-sphere equation of state. The data suggest that, besides gravitation, there is an additional force acting on the particles, probably due to the build-up of an electrostatic sedimentation potential.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02458789
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