Introduction to Colloid and Surface Chemistry |
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Page 30
... solvent ( or two solutions of different concentration ) are separated from one another by a semipermeable membrane , i.e. a membrane which is permeable to the solvent but not to the solute . The tendency to equalize chemical potentials ...
... solvent ( or two solutions of different concentration ) are separated from one another by a semipermeable membrane , i.e. a membrane which is permeable to the solvent but not to the solute . The tendency to equalize chemical potentials ...
Page 60
... solvent - solvent attractive forces , the solute molecules tend to migrate away from the surface into the bulk of the liquid . Rate of Adsorption The formation of an adsorbed surface layer is not an instan- taneous process but is ...
... solvent - solvent attractive forces , the solute molecules tend to migrate away from the surface into the bulk of the liquid . Rate of Adsorption The formation of an adsorbed surface layer is not an instan- taneous process but is ...
Page 162
... solvent systems ( for c in g / 100 ml . ) System Cellulose acetate in acetone ( 25 ° C ) Polystyrene in toluene ( 25 ° C ) Polymethylmethacrylate in benzene ( 25 ° C ) Polyvinyl chloride in cyclohexanone ( 25 ° C ) K a 1.49 × 10-4 0.82 ...
... solvent systems ( for c in g / 100 ml . ) System Cellulose acetate in acetone ( 25 ° C ) Polystyrene in toluene ( 25 ° C ) Polymethylmethacrylate in benzene ( 25 ° C ) Polyvinyl chloride in cyclohexanone ( 25 ° C ) K a 1.49 × 10-4 0.82 ...
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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