Abstract
The micellar properties of bis(quarternary ammonium bromide) surfactants were studied by means of dynamic light scattering and electrokinetic measurements. The coexistence of small spherical micelles and large aggregates for surfactants with eight to 12 carbon atoms in the alkyl chain is observed. Below this region, only spherical micelles appear and above 12 carbon atoms, large aggregates are present. The electrokinetic measurements of zeta potential correspond with the light scattering results. Bimodality in the peaks was observed in the region of nine to 12 carbon atoms in the alkyl chain. As follows from the light scattering results, solubilization with a monomeric surfactant showed that, in the case of dodecyltrimethylammonium bromide (DTAB) and 12-4-12 surfactant, the presence of large aggregates decreases strongly with increasing DTAB concentration in the system. No such observation was made when hexadecyltrimethylammonium bromide (CTAB) was present in the system with 16-4-16 surfactant, where only unimodal size spectra were registered.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Colloids and Surfaces A: Physicochemical and Engineering Aspects
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
