Figure 2
From: Particle Adsorption on Hydrogel Surfaces in Aqueous Media due to van der Waals Attraction
(a) Zero-frequency (\({A}_{\nu =0}\)), and nonzero-frequency (\({A}_{\nu > 0}\)) terms of the Hamaker constant as functions of separation x; silica1 particles and PAAm gel system in water with [NaCl] = 50 mM. (b) Calculated vdW potential between silica 1 particles and PAAm gel at various values of ethylene glycol (EG) concentrations, C EG. (c) Refractivity of aqueous solutions of EG at different values of C EG. (d) Plot of the Hamaker constant vs. C EG estimated from Lifsitz theory (eqs 3 and 4).
