A hydrogel formed by cetylpyrrolidinium bromide and sodium salicylate

A novel hydrogel constructed by N-methyl-N-cetylpyrrolidinium bromide (C16MPBr) and sodium salicylate (NaSal) is investigated using 1H NMR, FT-IR, SEM, and rheological measurements. Through the rheological characterization of the hydrogels, both the NaSal concentration and pH have significant effects on the formation and properties of the gels. 1H NMR, FT-IR, and SEM have also been employed to investigate the molecular arrangement and morphology of the gels. Hydrophobic and electrostatic interactions are considered as the main driving forces to form the gels.

A novel hydrogel constructed by N-methyl-N-cetylpyrrolidinium bromide (C16MPBr) and sodium salicylate (NaSal) is investigated using 1H NMR, FT-IR, SEM, and rheological measurements.Figure optionsDownload as PowerPoint slideHighlights
► A hydrogel formed by C16MPBr and NaSal is investigated.
► The gel formation process undergoes a transition from wormlike micelles to gels.
► Both salt concentration and pH have effects on the properties of the gels.
► Hydrophobic and electrostatic interactions are driving forces to form the gels.