PHYSICO – CHEMICAL ANALYSIS ON CETYLPYRIDINIUM CHLORIDE (CPC) WITH ALCOHOL SOLUTION AT DIFFERENT TEMPERATURES - ULTRASONIC, UV AND FTIR ANALYSIS

摘要

The ultrasonic velocity, density and viscosity in the mixtures of Cetylpyridinium Chloride (CPC) with Water - Alcohols (Methanol, Ethanol and 1-Propanol) in different concentration ranges are measured at different temperatures 303, 313 and 323K with a view to determine the Critical Micelle Concentration (CMC). From the experimental data, other related acoustical parameters such as adiabatic compressibility (β), intermolecular free length (Lf), internal pressure (?i), free volume (Vf), cohesive energy (CE), relaxation time (?), Rao’s constant (Ra),absorption coefficient (α/f2), acoustical impedance (Za) and solvation number (Sn) have been evaluated. All these parameters have utilized to study of various molecular interactions takes place in binary mixtures of (i) CPC + Water - Methanol, (ii) CPC + Water - Ethanol and (iii) CPC + Water -1- Propanol solution. The Critical Micelle Concentration (CMC) of (Cetyl Pyridinium Chloride (CPC) with Water - Alcohols) was determined to be 0.6%ofCetyl Pyridinium Chloride (CPC) with Water–Methanol and Water -Ethanol, 0.8% of Cetyl Pyridinium Chloride (CPC) with Water -1- Propanol system. The UV and FTIR studies were also used to characterize these samples. The results are discussed in molecular interactions, absorption and functional groups.