Micellar formation under pressure

Journal Article · Thu Jan 13 04:00:00 EST 1977 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100516a011· OSTI ID:6560458

Rodriguez, S; Offen, H

As a consequence of the greater volume of amphiphiles in the micellar state compared to the unassociated state, compression of these solutions through an externally applied pressure inhibits micelle formation, i.e., higher concentrations of monomers are required at high pressures to achieve micellization. Since the electrical conductance method has led to the observed cmc(P) behavior, it appeared important to monitor the pressure response of ionic micelles by another technique. The present work on micellar formation under pressure employs differential absorption spectroscopy applied to aqueous solutions of sodium dodecyl sulfate. Significantly, the measurements of cmc(P) are at variance from those obtained by Hamann using conductivity as the indicator of micellar behavior. (28 refs.)

• Research Organization: California Univ., Santa Barbara
• OSTI ID: 6560458
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 81:1; ISSN JPCHA
• Country of Publication: United States
• Language: English

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