Adsorption of cationic, anionic and hydrophobically modified polyacrylamides on silica surfaces

Coating of silica sand with aluminosilicate clay

“…The bonding mechanisms of polymers to silica [8][9][10][11][12] and clay minerals [5,6,[13][14][15] are well understood. Nonionic polymers bind to silica surfaces through H-bonding of hydroxyl (OH), amino (NH 2 ), carbonyl (C=O), and other polar functional groups.…”

Adsorption of cationic polyacrylamide onto sepiolite

“…These include adsorption of a anionic PAM onto two kaolinitic soils, a sandy loam Worsham (Typic Ochraquults), and a sandy clay Cecil (Typic Hapludults) [14], electrokinetic properties and structure of adsorbed layers of PAM at Fe 2 O 3 -polymer solution interface [15], adsorption of C-PAM on silica surfaces [16], sulfonate group surface concentration on the various membranes and its effect on the adsorption of a cationic polyacrylamide onto Perfluorosulfonate ionomer membranes (PFSIs) [17], the adsorption of C-PAM on the cellulosic fibres [18], the adsorption of PAM onto negatively charged smectite particles [19] adsorption of cationic, anionic and hydrophobically modified polyacrylamides on silica surfaces 0304 [20], and interactions of polyacrylamide polymer with bentonite in aqueous systems [21]. In our previously paper, adsorption of a cationic PAM onto kaolinite was investigated [22].…”

Study of adsorptive behavior of sulfonated polyacrylamide onto carbonate rock particles to enhance oil recovery

“…Conversely, when the electrostatic attraction is repulsive, an increase in salt concentration will increase adsorption [12,13,29,30].…”