학술논문
Surface and thermodynamic parameters of sodium N-acyl sarcosinate surfactant solutions
Document Type
Report
Author abstract
Author abstract
Source
Journal of the American Oil Chemists' Society. Jan, 1997, Vol. 74 Issue 1, p43, 5 p.
Subject
Language
English
ISSN
0003-021X
Abstract
Surface tension as a function of concentration and temperature was measured for solutions of N-acyl sarcosinates, RCON(CH.sub.3)C[H.sub.2]COONa. From the intersection points in the (I3-log c) curves, the critical micelle concentration (CMC) was determined at 20, 35, 50, and 65degC. Structural effects on the CMC, maximum surface excess, and the minimum area per molecule at the aqueous solution/air interface are discussed. The free energy, enthalpy, and entropy of micellization and adsorption of surfactant solutions also were investigated.