Viscometric Evaluation and Micellar Properties of Cu (II) Soap Derived from Neem Oil in Non-aqueous Media

摘要

Background: The Colloidal-chemical behavior of Copper surfactants aregaining popularity on account of their utilitarian effect such as foaming, emulsification andfungicidal activities. The studies of various parameter derived from viscometric equationsprovide revealing interpretations of solute - solvent interaction and structural insight ofmicelle in binary and ternary system, which plays a vital role in its selection for industrialand biological applications.Objective: It is plan to study viscosity of copper neem soap solutions in benzene plusmethanol mixture in different composition in order to understand the nature of criticalmicelle concentration and micellar characterization.Method: First we synthesized copper neem soap based upon their widest applicabilityperforma. It was characterized by elemental analysis, melting points, IR, NMR, spectralstudies. Benzene-methanol has been selected as co- solvents since mixed solvents showtendency to interact with complex molecules and result in affecting the aggregation of soapmolecule.Results: The results were used to determine the Critical Micelle Concentration (CMC),soap complex-solvent interactions and the effect of chain length of the surfactant moleculeon various parameters. The results with regard to solute-solute and solute- solventinteraction have been discussed in terms of well-known Moulik’s and Jones- Doleequations. The effect of surfactant concentration on viscosity of the solution in non-polarsolvent has been discussed.Conclusion: The viscosity parameters are important to understand the colloidal behavior,CMC characteristics and nature of the complexes. These studies indirectly help inidentifying the structural insight, physical and biochemical properties of above metallicsoaps. The above studies will definitely help future researchers to apply these novel soapsin multiple interlinked fields based on their widest applicability. Overall, the present courseof study helps us to understand the characteristic nature and application of biological activecopper soaps.