A novel cationic Gemini surfactant with amide group: synthesis and micellization behavior in aqueous solutions
Küçük Resim Yok
Tarih
2016
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Novel cationic Gemini surfactant with amide group, N (1),N (10)-bis(3-dodecanamidopropyl)-N (1),N (1),N (10),N (10)-tetramethyldecan-1,10-diammonium bromide (abbreviated as 2C(12)enAm) has been synthesized by two-step reactions, purified and characterized in our laboratory. The critical micelle concentration (CMC) values of this Gemini surfactant were determined using electrical conductivity and surface tension measurements in the range of temperatures from 298.15 to 328.15 K. It was observed that the CMC value of Gemini surfactant has a much lower value compared with monomeric ones and shows a slight increase with an increase in the temperature. The interactions between Gemini and conventional monomeric surfactant hexadecyltrimethylammonium bromide (CTAB) have been studied using the conductivity at a certain micellar concentration and temperature range. Rubingh's theory is used to evaluate the micellar interaction parameters (beta) for the mixed systems. It has been observed that mixed micelle formation in all the binary mixtures exhibited negative synergism (antagonism) or ideal behavior due to positive beta values. Thermodynamics parameters were also obtained from the temperature dependence of the CMC values. From the surface tension measurements, CMC, maximum surface excess concentration at the solution/air interface (I(max)), minimum area per surfactant molecule (A (min)), the surface pressure at CMC (I (CMC)), the surfactant concentration required to reduce the surface tension of solvent by 20 mN m(-1) (pC(20)), and thermodynamic parameters have been evaluated at same temperatures.
Açıklama
Anahtar Kelimeler
Cationic Gemini Surfactant With Amide Group, Critical Micelle Concentration, Interaction Parameters, Negative Synergism, Surface-Active Properties, Reactive Orange 16, Aggregation Behavior, Nonionic Surfactants, Ionic Liquids, Chain, Electrolytes, Temperature, Mixtures, Property, Bromide
Kaynak
Colloid And Polymer Science
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
294
Sayı
9
