Introduction to Colloid and Surface Chemistry |
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Page 138
... stability of lyophobic sols is treated in terms of the free energy changes which take place when two sol particles approach each other . The theory involves an estimation of the magnitude , and variation with interparticle distance , of ...
... stability of lyophobic sols is treated in terms of the free energy changes which take place when two sol particles approach each other . The theory involves an estimation of the magnitude , and variation with interparticle distance , of ...
Page 146
... stability of clay suspensions " ) is an alumina sol , for which hydrogen ( or hydroxyl ) ions are potential determining . At low pH the sol is positively charged by adsorption of Al3 + ions , and at high pH the sol is negatively charged ...
... stability of clay suspensions " ) is an alumina sol , for which hydrogen ( or hydroxyl ) ions are potential determining . At low pH the sol is positively charged by adsorption of Al3 + ions , and at high pH the sol is negatively charged ...
Page 147
... stability . The effect of pH on the stability of clay suspensions has already been mentioned in this respect . A negatively charged silver iodide sol can be flocculated by the careful addition of a very small amount of silver nitrate ...
... stability . The effect of pH on the stability of clay suspensions has already been mentioned in this respect . A negatively charged silver iodide sol can be flocculated by the careful addition of a very small amount of silver nitrate ...
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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