The influence of surface chemical properties of kaolin surfaces on the adsorption of poly(vinyl alcohol)

Poly(vinyl alcohol)/Clay‐Based Nanocomposite Hydrogels: Swelling Behavior and Characterization

“…Hydrogen bonding and the presence of silanol groups on the layer surface of MOM contribute directly to assure the overall stability of the material. [13,14] Therefore, MOM and other phyllosilicates can act as co-crosslinker of hydrophilic polymers in solution. [15] These features were well approached by Lee and Jou, who have investigated the effect of intercalated montmorillonite with (3-acrylamidopropyl)trimethylammonium chloride as the intercalating agent, on the swelling and drug release behaviors of a nanocomposite constituted by N-isopropylacrylamide (NIPAAm)/acrylic acid (AA).…”

Experimental studies on the desorption of adsorbed sodium poly(acrylic acid) from crude kaolin particles

“…Dodson and Somasundaran (1983) studied the desorption of polyacrylamide and hydrolyzed polyacrylamide from the kaolinite surface. Adsorption of non-ionic polymers on the kaolin surface have also been investigated to elucidate the polymer adsorption characteristics and determined that non-ionic polymer molecules interact with the surface of kaolinite particles via polymer bridging (Chaplain et al, 1995;Carasso et al, 1997;Backfolk et al, 2006;Besra et al, 2006;Lagaly, 2006;Kim and Palomino, 2009). However, there are almost no reports on the desorption of polymers adsorbed onto the kaolin surface, especially using PAA and its effect on rheological behavior.…”

“…The studies have usually focused on the achievement of rheologically stable dispersion (Husband, 1998;Mpofu et al, 2003;Ma, 2011;Rao et al, 2011), the electrokinetic properties of the system (Braggs et al 1994;Alkan et al, 2005;Lagaly, 2006;Chassagne et al, 2009;Amorós et al, 2010;Duman et al, 2012;Leong et al, 2012), the adsorption isotherms (Backfolk et al, 2001;Marco and Llorens, 2005;Hoch and Bandara, 2005;Backfolk et al, 2006;Kwan et al, 2006Kwan et al, , 2011Totland et al, 2011), and the identification of the reaction mechanism causing the dissolution of metal ions from the particles (Huertas et al, 1998(Huertas et al, , 1999Yuan et al, 1998;Zaman et al, 2003). Dodson and Somasundaran (1983) studied the desorption of polyacrylamide and hydrolyzed polyacrylamide from the kaolinite surface.…”

Trichlorophenol removal from aqueous solutions by modified halloysite: kinetic and equilibrium studies

“…Halloysite occurs mainly in two different polymorphs, the hydrated form (basal distance around 10 Å ) with the Al 2 Si 2 O 5 (OH) 4 ·2H 2 O formula and the dehydrated form (basal distance around 7 Å ) with the Al 2 Si 2 O 5 (OH) 4 formula, which is identical to kaolinite. Recently, it was used as nanocomposites, nanocontainers and adsorbents [15][16][17][18]. The objectives of this study were to characterize the surface modification of an Algerian halloysite (Hal) after calcination, activation and combined acid and thermal activation (HalC).…”