Solubilization of Reactive Red 2 in the Mixed Micelles of Cetylpyridinium Chloride and TX-114

Abstract

Owing to their surface active properties, surfactants have numerous applications in different fields of life. In the present research work, the solubilization of reactive red 2 (RR2) has been studied in single and mixed micellar systems (MMS) using UV-visible spectroscopy and electrical conductivity measurements. The interaction of RR2 with ionic micelles of cetylpyridinium chloride (CPC) was investigated. In order to probe the interaction of RR2 in MMS, mixtures of CPC and TX-114 (Triton X-114, a nonionic surfactant) were used. UV-visible spectroscopy has been used to obtain the degree of solubilization of RR2 in terms of the partition coefficient (Kc) and Gibbs free energy of partitioning (ΔG°p). Electrical conductivity data have been employed to detect the critical micelle concentration (CMC) of the surfactant systems in the presence of RR2 and, accordingly, to calculate the thermodynamic parameters of the micellization. From the obtained data, it is concluded that the micellization is spontaneous at all studied temperatures. Moreover, the micellization was observed to be driven by both enthalpy and entropy. The results also indicated that MMS have better solubilizing power than single micellar solutions.

Effect of Quaternary Ammonium Gemini Surfactant Solution on the Rate Constant of the Ninhydrin–Lysine Reaction

“…Aggregation structures generated by surfactants have gained remarkable attention owing to their unique phenomenon. − Due to their extraordinary behavior, − surfactants are engaged in diverge functions for several research purposes including industrial studies. They are employed in many sectors of fundamental as well as advanced applications. − The binding interaction of some active organic molecules with surfactants has been reported and displayed great importance in the arenas of surface chemistry. − Surfactants also work as a simple pseudophase model in several studies conducted by many potential investigators through micelle-involved reactions. − …”