Characterisation of the surface of polymer latices by photon correlation spectroscopy

Experimental Evidence of Hydration Forces between Polymer Colloids Obtained by Photon Correlation Spectroscopy Measurements

“…A similar result macher et al We conclude by a co-polymerization of styrene and acrilic acid. Goossens that the Ohshima-Schumacher approach is not capable of and Zembrod (23), also working with carboxylic particles fitting our experimental results. From this we can conclude of 195 nm in diameter, found the same trend for R h against that the drag force on the e.d.l is not the mechanism responsiionic strength (NaNO 3 ).…”

“…If m e The change in size of the carboxylic particles in function could not be measured directly, we carried out an extrapolaof ionic strength has been investigated by several authors tion. Once the ratio between sedimentation rates has been (22,23). However, the behavior at very high electrolyte calculated, and following the idea as put forward Schuconcentration has only been scarcely studied.…”

Effect of simple electrolytes on the hydrodynamic radius of polystyrene latex

“…From the present experiments, no detailed information about the rigid structural water can be obtained. Recently Goossens et al presented the idea that there is the hairy structure on the surface of the latex sphere [9]. They have also observed the salt concentration and pH dependencies of the diffusion constant of the latex particle whose charged group is a carboxylic acid instead of a sulfonic acid.…”

Particle Characterization Using Multiple Scattering Decorrelation Methods. Part 1: Standard Latex Particles

“…Using this assumption, we described possible origins for observing a radius different from the geometrical one with the methods employed. However, recently a systematic study revealed strong evidence for the existence of a hairy layer on the surface of polystyrene latex spheres [30], an idea that had already been proposed about 20 years ago [31,32]. We do not want to investigate here whether this concept is valid or not.…”