Stabilization of Colloidal Dispersions by Polymer Adsorption |
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Page 47
... Hamaker [ 149 ] . His method is based on the interaction of pairs of mole ... constant which depends upon the properties of the specific atoms . For a ... Hamaker constant ( normally about 10 given by 2q28 , where q is the number of atoms ...
... Hamaker [ 149 ] . His method is based on the interaction of pairs of mole ... constant which depends upon the properties of the specific atoms . For a ... Hamaker constant ( normally about 10 given by 2q28 , where q is the number of atoms ...
Page 48
... Hamaker constant A A may be estimated theoretically by calculating certain molecu- lar constants from optical data . Hamaker constants for various colloidal systems are given in the literature [ 140 , 142 , 150 ) , and the determination ...
... Hamaker constant A A may be estimated theoretically by calculating certain molecu- lar constants from optical data . Hamaker constants for various colloidal systems are given in the literature [ 140 , 142 , 150 ) , and the determination ...
Page 51
... Hamaker constant Azz for the presence of the adsorbed layer . Assuming that the adsorbed layer is homogeneous , an approximation corre- sponding to Eq . ( 31 ) for the case of a particle with an adsorbed layer of thickness & is given by ...
... Hamaker constant Azz for the presence of the adsorbed layer . Assuming that the adsorbed layer is homogeneous , an approximation corre- sponding to Eq . ( 31 ) for the case of a particle with an adsorbed layer of thickness & is given by ...
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According addition adsorbed layer adsorbed polymer adsorption American Chemical Society amount of adsorption applied approach aqueous assumed attraction Bagchi barrier bridging calculated charge Chem Chemical Colloid Interfac concentration condition configurations constant curves decreases dependence derived determined discussed dispersion medium distance distribution DLVO theory double layer effect energy change entropic equation experimental extended Figure flocculation force free energy function given greater groups important increases interaction isotherm length loop measured mechanism method molecular weight Napper negative nonionic obtained occurs osmotic overlap oxide parameter particles Phys pigment plane poly polyamide polymer adsorption polymer molecules positive potential potential energy presence Redrawn with permission region relationship repulsive energy segments separation shown in Fig shows solution solvent stability studied surface tail temperature theoretical theory thickness tion unit various viscosity volume Waals