Introduction to Colloid and Surface Chemistry |
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Page 50
... surface by 1 cm2 , and has the dimensionally equivalent units erg cm - 2 . Surface tension and surface free energy are numerically equal provided that the viscosity of the liquid is not too great . The same considerations apply to the ...
... surface by 1 cm2 , and has the dimensionally equivalent units erg cm - 2 . Surface tension and surface free energy are numerically equal provided that the viscosity of the liquid is not too great . The same considerations apply to the ...
Page 59
... surface ( or interfacial ) tension will be lowered to a value Y = % - π Figure 4.9 shows the effect of lower members of the homologous series of normal fatty alcohols on the surface tension of water . 80 Surface tension , dyne / cm 60 ...
... surface ( or interfacial ) tension will be lowered to a value Y = % - π Figure 4.9 shows the effect of lower members of the homologous series of normal fatty alcohols on the surface tension of water . 80 Surface tension , dyne / cm 60 ...
Page 60
... Surface tension , dyne / cm 80 78 76 74 74 1 2 3 5 Molar concentration Figure 4.10 . Surface tension of aqueous sodium chloride solutions at 20 ° C Here , because the solute - solvent attractive forces are greater than the solvent ...
... Surface tension , dyne / cm 80 78 76 74 74 1 2 3 5 Molar concentration Figure 4.10 . Surface tension of aqueous sodium chloride solutions at 20 ° C Here , because the solute - solvent attractive forces are greater than the solvent ...
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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