Diffusional deposition of colloidal particles: electrostatic interaction and size polydispersity effects

Influence of Polydispersity on Adsorption of Nanoparticles

“…(iii) Small particles can adsorb in the spaces between larger particles, not accessible for the large particles themselves. This was recently verfied experimentally by Semmler et al, who investigated the adsorption of a mixture of two polystyrene particle sizes (55 ± 8 nm and 24 ± 9 nm) (17). By using atomic force microscopy (AFM) to study the film structure at different adsorption times, they found that the size distribution of particles on the surface was skewed toward smaller particles for longer adsorption times.…”

Stability of Nanodispersions: A Model for Kinetics of Aggregation of Nanoparticles

“…The effect of dispersion forces was solved by Hamaker (5), Bradly (6), and de Boer (7), while electrostatic repulsion could be evaluated on the basis of the Derjaguin, Landau, Vervey, Overbeek (DLVO) theory (1,8). Recently, more sophisticated models were elaborated (9)(10)(11)(12)(13)(14). In most of the cases the theory of Colloid Stability explains the experimental data, especially if the correct values of the electrostatic surface potentials, as obtained from the Surface Complexation model (15)(16)(17)(18)(19), are used (20)(21)(22).…”

Reduction of surface friction of natural rubber film coated with PMMA particle: Effect of particle size

“…The slightly change of %Cs from 36.4 to 33.4 might be due to the grafting PAAm chains which are able to increase the interfacial adhesion between particle and matrix. 18 It was, therefore, concluded that the SPNRg-PAAm coated with PMMA particles was stable under the rubbing conditions.…”

“…It should be noted that the presence of various complex particle-particle, particlesurface or hydrodynamic interactions is not considered in the RSA model. 18 To increase the amount of PMMA particles on the surface, the deposition of a mixture of latexes having both large and small particle sizes of 162 and 626 nm on the rubber substrate was, therefore, attempted. It was believed that the small particles might adsorb into the interstices between large particles.…”

“…It was believed that the small particles might adsorb into the interstices between large particles. 18 The %Cs values as a function of various number ratios of the large to small particles (N L : N S ) are presented in Figure 10. The SEM micrographs of The results in Figure 10 revealed that the total Cs value decreased with increasing N L : N S from 1 : 1 to 1 : 17.…”