Journal :   Asian Journal of Research in Chemistry

Volume No. :   5

Issue No. :  1

Year :  2012

Pages :   34-37

ISSN Print :  0974-4169

ISSN Online :  0974-4150


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Surface and Thermodynamic Properties of Cetyl Pyridinium Chloride (CPC) in Aqueous Sodium Chloride Solutions at Various Temperatures



Address:   Ram Partap1*, Neelam Swaroop2, D.K.Tyagi3 and O.P. Yadav4
1Department of Chemistry, Government College, Hisar, 125001,India
3Jain P.G. College, Mujaffar Nagar (U.P.), 251001, India
3Department of Chemistry D A V College, Dehradun India
4Department of Chemistry, CCS Haryana Agricultural University. Hisar 125 004, India
*Corresponding Author
DOI No:

ABSTRACT:
Critical micelle concentration (CMC), maximum surface excess concentration (?max), minimum area per molecule (Amin) at air-liquid interface of cetyl pyridinium chloride (CPC) in aqueous sodium chloride solutions have been, tensiometrically, determined at 288.15, 293.15 and 298.15 K. Thermodynamic parameters of micellization as well as of adsorption at air-liquid interface have been evaluated. Whereas micellization process is exothermic, adsorption of surfactant at the air-liquid interface is endothermic in nature. The latter process however becomes feasible owing to the predominant entropy gain.
KEYWORDS:
Critical micelle concentration, tensiometrically, micellization, adsorption, entropy.
Cite:
Ram Partap, Neelam Swaroop, D.K.Tyagi, O.P. Yadav. Surface and Thermodynamic Properties of Cetyl Pyridinium Chloride (CPC) in Aqueous Sodium Chloride Solutions at Various Temperatures. Asian J. Research Chem. 5(1): January 2012; Page 34-37.
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