Adsorption of mixtures of polymers from dilute and semidilute solutions

Polydispersity Effect on the Adsorption of Polymer Mixtures

“…In our works it was established that adsorption from semidilute and concentrated solutions does not obey the regularities of adsorption from dilute solutions, and, in particular, there is no plateau region on the adsorption isotherms (2)(3)(4). The fractionation occurring for polydispersed polymers adsorbed on a surface should also take place for adsorption from semidilute and concentrated solutions.…”

Flocculation and Precipitation in the Presence of Binary Polyelectrolytes

“…Recently, steadily growing interest was shown in the effect exerted on the flocculation by mixtures of cationic and anionic derivatives of polyacrylamide [138] and also of reagents based on nonionic polymers [4 37, 9, 10]. It was demonstrated previously [11] that adsorption of polymers from a mixture depends on the thermodynamic compatibility of components in the solution. It is also well known that it is the adsorption of macromolecules on particles of the dispersed phase that controls the flocculation efficiency and dispersion clarification rate [138].…”