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    Effect of Organic Counterions on the Properties of N-Lauryl Diisopropanolamine Surfactants

    Year: 2015

    Journal: JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY, Vol. 36, p 1022-1028, 20170208

    Authors: Asadov, Ziyafaddin H.; Rahimov, Ravan A.; Mammadova, Khuraman A.; Ahmadova, Gulnara A.; Ahmadbayova, Saida F.

    Organizations: Azerbaijan Natl Acad Sci, Inst Petrochem Proc, AZ-1025 Baku, Azerbaijan

    The influence of counterions on the surface properties of N-lauryl diisopropanolamine surfactants is delineated using conductometry and surface tension measurements. Twelve types of organic counterions have been studied: C-1-C-12 monocarboxylic acids anions. The surface properties of the synthesized surfactants, including surface tension, critical micelle concentration (CMC), effectiveness (pi(CMC)), efficiency (pC(20)), maximum surface excess (Gamma(max)), minimum surface area (A(min)), Gibbs energy of micellization (Delta G(mic)), and adsorption (Delta G(ad)) processes in the aqueous. The biodegradability of the prepared surfactants was tested in river water using the die-away method. Petroleum-collecting and petroleum-dispersing capacities of the synthesized compounds on the surface of water of varying mineralization degree have been studied.