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    Synthesis and surface active properties of a gemini-type surfactant linked by a quaternary ammonium group

    Year: 2013

    Journal: Colloid and Polymer Science, 20130324

    Authors: JongChoo Lim 1, Jong-mok Park 2, Chan Jo Park 3, Byung Min Lee 2 4

    Last authors: Byung Min Lee

    Organizations: 1. Department of Chemical and Biochemical Engineering, Dongguk University-Seoul, Seoul, 100-715, South Korea 2. Environment and Resources Research Center, Green Chemistry Division, Korea Research Institute of Chemical Technology, DaeJeon, 305-600, South Korea 3. Center for Chemical Analysis, Korea Research Institute of Chemical Technology, DaeJeon, 305-600, South Korea 4. Department of Green Chemistry and Environmental Biotechnology, University of Science and Technology, DaeJeon, 305-350, South Korea

    Country: South Korea

    In this study, cationic surfactants having multi-hydroxyl groups were synthesized by the condensation reaction of octadec-9-enyl glycidyl ether and methyl amine followed by the quaternization with dimethyl sulfate. The structure of the product was elucidated by 1H-NMR and FT-IR. The minimum critical micelle concentration (CMC) and surface tension achieved using C18:1-BHDM surfactant were 1.24 × 10−4 mol/L and 43.36 mN/m, respectively. The interfacial tensions measured between 1 wt% surfactant solution and n-decane were found to be in the same order of magnitude as those exhibited between micellar solutions and nonpolar hydrocarbon oils. The contact angle measurement result suggests that C18:1-BADM is the best wetting agent among the surfactants tested during this study. It has been observed that the results for foam stability measurement are consistent with those of CMC and contact angle. That is, the percentage of foam volume decrease has been observed to increase with an increase in number of hydroxyl group.