Abstract
The micelle formation by the surface active ionic liquids (ILs) N-alkyl-N-methylpiperidinium bromide CnPDB (n=12, 14, 16) in aqueous solution has been investigated through the characterizations of surface tension, electrical conductivity and steady-state fluorescence measurements. From the curves of surface tension vs CnPDB concentration at 25°C, the critical micelle concentration (cmc), the effectiveness of the surface tension reduction (Πcmc), the maximum surface excess concentration (Гmax) and the minimum area (Amin) occupied per surfactant molecule at the air/water interface are calculated. Through the electrical conductivity measurements, the cmc values at different temperatures and a series of thermodynamic parameters (ΔGm°, ΔHm° and ΔSm°) for the formation of micelles are evaluated in the temperature range of 25–45°C. The steady-state fluorescence measurement is also employed to investigate the micelle formation of CnPDB.
Sign-in/Register to access full text options 
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.
