Thermal stability and pollutant adsorption efficiency of nanocomposites consisted of clay and polymeric quaternary ammonium salts

Abstract

Polymer/layered silicate nanocomposites based on polymeric quaternary ammonium salts (ionenes) intercalated into the interlayer galleries of montmorillonite were synthesized. Zeta potential measurements were conducted to determine the amount of ionenes required to neutralize the negative charge of clay. The composition and structure of the obtained nanocomposites were examined by elemental analysis, ATR-FTIR and XRD. High dye sorption capacity was observed for the composite containing ionene 6,2.

Comparison of Structural, Water‐Retaining and Sorption Properties of Acrylamide‐Based Hydrogels Cross‐Linked by Physical and Chemical Methods

“…Sorption capacity of pAAm‐AN‐MMT towards Cd(II) is higher (5 mg/g) than that of chemically pAAm‐AN (1.4 mg/g). MBAA‐cross‐linked clay/hydrogel composites were reported to have higher adsorption capacity towards metal ions than clay‐cross‐linked ones [66] . This may be caused by the clay and polymer functional group availability reduction since they take part in hydrogel cross‐linking.…”

“…MBAA-cross-linked clay/hydrogel composites were reported to have higher adsorption capacity towards metal ions than claycross-linked ones. [66] This may be caused by the clay and polymer functional group availability reduction since they take part in hydrogel cross-linking. For example, MBAA-cross-linked pAAc-AAm-kaolinite and pAAc-acrylic sodium-bentonite composites had sorption capacities towards Cd(II) equal to 28.5 and 59.4 mg/g, respectively.…”