Synthesis and pH-stimuli responsive research of gemini amine-oxide surfactants containing amides.

ABSTRACT: The series of gemini amine-oxide surfactants with the formula C _n H_2n+1CONH(CH₂)₂N⁺O^-(CH₃)-(CH₂)₃-(CH₃)N⁺O^-(CH₂)₂NHCOC _n H_2n+1 (n = 11, 13, 15, and 17) has been synthesized successfully. Their isoelectric point and acid dissociation constant were measured to determine the ionization form of the surfactant molecules in aqueous solution within different pH values. The studies showed that the length of the hydrophobic alkyl chains had a great influence on the pH-stimuli responsive behavior of these surfactants. When n ≤ 13 (n-3-n-OA), the regularity of the pH-stimu

SUBMITTER: Chen H 

PROVIDER: S-EPMC9058489 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature