Thermodynamic study of the interaction between C.I. reactive Red180 with cationic gemini surfactant in aqueous solution
Küçük Resim Yok
Tarih
2012
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Chemical Publishing Co.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Interactions between Reactive Red 180 and cationic gemini surfactant solutions were investigated by means of electrical conductivity measurements at different temperatures ranging from 298.15 to 323.15 K. Gemini surfactant of the type N,N'-didecyl-N,N,N',N'-tetramethyl- N,N'-ethanediyl-diammonium dibromide referred as (10-2-10) was synthesized in our laboratory. It was observed that a decrease in the measured specific conductance of dye-gemini surfactant mixtures was caused by the formation of nonconducting or less conducting dyesurfactant associates. The aggregation of surfactant and dye takes place at a surfactant concentration far below the critical micelle concentration of the individual surfactant. The long-range electrostatic forces and short-range hydrophobic interactions are very important factors at the dye-surfactant aggregation in aqueous solutions. From conductivity data for dyes-gemini surfactant interaction such as micellar ionization degree, counterion binding, equilibrium constant and thermodynamic parameters of interaction were calculated. Thermodynamic parameters of interaction indicate that interaction of dye-(10-2-10) is enthalpy driven.
Açıklama
Anahtar Kelimeler
Association Constant; Cationic Gemini Surfactant; Ionization Degree; Reactive Dye; Thermodynamic Parameters
Kaynak
Asian Journal of Chemistry
WoS Q Değeri
Scopus Q Değeri
Q4
Cilt
24
Sayı
12
