Relaxation phenomena of hydrolyzed polyvinylamine molecules adsorbed at the silica/water interface

Interfacial characteristics of heterogeneous layers of linear polyvinylamine and branched polyethyleneimine or polyethyleneimine grafted with C12–C22 alkyl chains

“…This allows one to determine the adsorption characteristics during the initial polymer/colloid contact period when the polymer concentration in the bulk solution is maximal and at succeeding time points as the polymer concentration in the mobile phase progressively decreases and finally drops to that measured in the effluent [22]. Injection of a second polymer into the column and determination of the new adsorption characteristics provides information on the modifications to the bare adsorbent induced by the first polymer and on the changes induced by these modifications in the interactions between the interface and the second polymer [23]. In Refs.…”

“…In Refs. [22,23], the authors studied polyvinylamine of different molecular weights and/or hydrolysis grades for which the interactions with a silica adsorbent were found to be of a similar nature. In Ref.…”