Introduction to Colloid and Surface Chemistry |
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Page 142
... energy barrier to flocculation depends upon the magnitude of the surface potential , and upon the range of the repulsive forces ( i.e. upon 1 / k ) . Potential energy of interaction , ergs x 1012 1.5 K - 0 30 KT 1.0 K = 105 20 kT 0.5 ...
... energy barrier to flocculation depends upon the magnitude of the surface potential , and upon the range of the repulsive forces ( i.e. upon 1 / k ) . Potential energy of interaction , ergs x 1012 1.5 K - 0 30 KT 1.0 K = 105 20 kT 0.5 ...
Page 143
... potential energy curve of the type shown in Figure 8.5 is taken to represent the transition between stability and floccu- lation , the conditions V = 0 and dV / dd = 0 are satisfied for the same value of d ; i.e. Potential energy of ...
... potential energy curve of the type shown in Figure 8.5 is taken to represent the transition between stability and floccu- lation , the conditions V = 0 and dV / dd = 0 are satisfied for the same value of d ; i.e. Potential energy of ...
Page 148
... energy being sufficient to overcome the repulsive potential energy barrier to flocculation when these encounters take place . Smoluchowski 63 developed a theory of rapid flocculation , applicable to the situation where there is no potential ...
... energy being sufficient to overcome the repulsive potential energy barrier to flocculation when these encounters take place . Smoluchowski 63 developed a theory of rapid flocculation , applicable to the situation where there is no potential ...
Contents
THE COLLOIDAL STATE | 1 |
KINETIC PROPERTIES | 15 |
OPTICAL PROPERTIES | 38 |
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acid adsorbed adsorption adsorption isotherm approximately aqueous behaviour boundary Brownian capillary condensation cell charged surface chemisorption cm-¹ co-ions colloidal dispersions colloidal particles colloidal systems constant contact angle counter-ions cross-section curve cylinder decreases deflocculated deformation depends detergent dispersion medium distance droplets effect electrical double layer electrode electrolyte emulsifying equation equilibrium example Figure film flocculation flocculation concentration flow heat hydrocarbon chains hydrophilic increase interaction interface intrinsic viscosity ionic ions isotherms light scattered lyophobic material measurements membrane method micelles mixed film molecular weight molecules monolayer monomolecular motion O/W emulsions orientated osmotic pressure physical adsorption plate polymer polymerization pores porous potential energy protein relative repulsive sample sedimentation shear soaps sodium solid surface soluble solution solvation solvent stability Stern layer stress surface tension surface-active surfactant temperature theory thermal thixotropic valency vapour pressure velocity viscoelastic viscometer volume W/O emulsions Waals wetting zero zeta potential