Introduction to Colloid and Surface Chemistry |
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Page 58
... interface repre- sents a balance between this tendency towards adsorption and the tendency towards complete mixing due to the thermal motion of the molecules . The tendency for surface - active molecules to pack into an interface ...
... interface repre- sents a balance between this tendency towards adsorption and the tendency towards complete mixing due to the thermal motion of the molecules . The tendency for surface - active molecules to pack into an interface ...
Page 73
... interface , or π = Yo - Y where Yo is the tension of clean interface , and y the tension of interface plus monolayer . The variation of surface pressure with the area available to the spread material is represented by a T - A ( force ...
... interface , or π = Yo - Y where Yo is the tension of clean interface , and y the tension of interface plus monolayer . The variation of surface pressure with the area available to the spread material is represented by a T - A ( force ...
Page 80
... interface than at the air - water interface , because the oil penetrates between the hydrocarbon chains of the film molecules and removes most of the inter - chain attraction . The -A curve at the air - water interface approximates to ...
... interface than at the air - water interface , because the oil penetrates between the hydrocarbon chains of the film molecules and removes most of the inter - chain attraction . The -A curve at the air - water interface approximates to ...
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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