期刊
JOURNAL OF SURFACTANTS AND DETERGENTS
卷 24, 期 3, 页码 433-444出版社
WILEY
DOI: 10.1002/jsde.12506
关键词
Surface tension; Gemini cationic surfactant; Biocidal properties; Micellization; Adsorption
资金
- Ministry of Education and Science of the Russian Federation [075-03-2020-223 (FSSF-2020-0017)]
- Institute of Petrochemical Processes of the National Academy of Sciences of Azerbaijan
Two new classes of gemini cationic surfactants have been synthesized and their aggregation properties in aqueous solution were investigated. These surfactants were found to start forming aggregates at concentrations well below their critical micelle concentrations (CMC), and the effect of the number of isopropylol groups on micelle sizes was explored using dynamic light scattering (DLS) technique. Additionally, the obtained gemini cationic surfactants showed biocidal character.
Two new classes of gemini cationic surfactants-hexanediyl-1,6-bis[(isopropylol) alkylammonium] dibromide {in the abbreviation form: CnC6Cn[iPr-OH] and CnC6Cn[iPr-OH](2); alkyl: CnH2n + 1 with n = 9, 10, 12 and 14}-have been synthesized by interaction of alkyl bromides with N,N '-di-(isopropylol)-1,6-diaminohexane and N,N,N ',N '-tetra-(isopropylol)-1,6-diaminohexane. The surface tension, electrical conductivity, and dynamic light scattering (DLS) techniques were used to investigate the aggregation properties of the gemini cationic surfactants in aqueous solution. The formation of critical aggregates at two concentrations in an aqueous solution from obtained gemini cationic surfactants were determined via the tensiometric method. Thus, these gemini cationic surfactants start to form aggregates at concentrations well below their critical micelle concentrations (CMC). The surface properties and the binding degree (beta) of the opposite ion were tested against the length of the surfactant hydrocarbon chain and the number of the isopropylol groups in the head group. By applying the DLS technique, it was explored that how the number of isopropylol groups in gemini cationic surfactants with C12H25 chain affects the sizes of micelles at concentrations greater than CMC. It was discovered that the obtained gemini cationic surfactants have a biocidal character.
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