Introduction to Colloid and Surface Chemistry |
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Page 2
... COLLOIDAL SYSTEMS Colloidal systems may be grouped into three general classifi- cations : 1. Colloidal dispersions : These are thermodynamically unstable owing to their high surface free energy and are irrever- sible systems in the ...
... COLLOIDAL SYSTEMS Colloidal systems may be grouped into three general classifi- cations : 1. Colloidal dispersions : These are thermodynamically unstable owing to their high surface free energy and are irrever- sible systems in the ...
Page 3
... colloidal dispersions are , therefore , two - phase systems . The phases are distinguished by the terms disperse phase ( for the phase forming the particles ) and dispersion medium ( for the medium in which the particles are distributed ) ...
... colloidal dispersions are , therefore , two - phase systems . The phases are distinguished by the terms disperse phase ( for the phase forming the particles ) and dispersion medium ( for the medium in which the particles are distributed ) ...
Page 38
... colloidal solution or dispersion some of the light may be absorbed ( colour is produced when light of certain ... colloidal dispersions is a consequence of intense light scattering . A beam of sunlight is often visible from the ...
... colloidal solution or dispersion some of the light may be absorbed ( colour is produced when light of certain ... colloidal dispersions is a consequence of intense light scattering . A beam of sunlight is often visible from the ...
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acid adsorbed adsorption adsorption isotherm approximately aqueous behaviour Brownian calculated cell charged surface chemisorption cm-¹ cm³ coefficient colloidal dispersions colloidal particles colloidal systems constant contact angle counter-ions curve cylinder decreases deflocculated deformation depends detergent diffusion dispersion medium distance droplets effect electrical double layer electrode electrolyte emulsifying equation equilibrium example Figure film flocculation flocculation concentration flow hydrocarbon chains hydrophilic increase interaction interface intrinsic viscosity ionic ions isotherms light scattered material measured 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 potential gradient protein ratio relative repulsive sample sedimentation shear soaps sodium solid surface soluble solution solvation solvent spherical particles 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