Introduction to Colloid and Surface ChemistryThe colloidal state; Kinetic properties; Optical properties; Liquid-gas and liquid- liquid interfaces; The solid-gas interface; Charged interfaces; Colloid stability; Rheology; Emulsions and foams. |
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Page 21
... diffusion Diffusion is the tendency for molecules to migrate from a region of high concentration to a region of lower concentration and is a direct result of Brownian motion . Fick's first law of diffusion ( analogous with the equation ...
... diffusion Diffusion is the tendency for molecules to migrate from a region of high concentration to a region of lower concentration and is a direct result of Brownian motion . Fick's first law of diffusion ( analogous with the equation ...
Page 23
... diffusion coefficient and Do is the diffusion coefficient of a system containing the equivalent unsolvated spheres ) is equal to the reciprocal of the frictional ratio f / fo . Charge effects are discussed on page 30 . Measurement of ...
... diffusion coefficient and Do is the diffusion coefficient of a system containing the equivalent unsolvated spheres ) is equal to the reciprocal of the frictional ratio f / fo . Charge effects are discussed on page 30 . Measurement of ...
Page 178
... diffusion coefficient . Substituting D = kт / 6лηа [ Equation ( 2.6 ) ] and com- bining Equations ( 8.5 ) and ( 8.6 ) gives k2 4KT 3n .. ( 8.7 ) where k2 is the rate constant for diffusion controlled flocculation . For a hydrosol at ...
... diffusion coefficient . Substituting D = kт / 6лηа [ Equation ( 2.6 ) ] and com- bining Equations ( 8.5 ) and ( 8.6 ) gives k2 4KT 3n .. ( 8.7 ) where k2 is the rate constant for diffusion controlled flocculation . For a hydrosol at ...
Contents
THE COLLOIDAL STATE | 1 |
KINETIC PROPERTIES | 16 |
OPTICAL PROPERTIES | 47 |
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adsorbed adsorption adsorption isotherm agents behaviour calculated capillary cell charge number charged surface chemisorption cm³ coefficient colloidal condensation constant contact angle counter-ions curve decrease depends detergent diffusion dispersion medium distance droplets effect electric double layer electric field electro-osmosis electrode electrokinetic electrolyte electrolyte concentration electrophoretic mobility emulsifying emulsion equation equilibrium example experimental fatty acids Figure flocculation flocculation concentration flow foam forces increase interaction interface intrinsic viscosity ions isotherms Langmuir Langmuir equation light scattered liquid lyophobic material measurements method micelles mol dm-3 molecules monolayer monomolecular nitrogen O/W emulsions phase physical adsorption polymer polymerisation pore porous potential energy protein radius ratio relative molecular mass result sample sedimentation shear silver iodide soaps sodium solid surface solvation solvent stabilising stability Stern layer streaming potential surface conductance surface tension surface-active surfactant temperature theory V/Vm vapour velocity viscoelastic viscosity volume Waals attraction wetting zeta potential