Small-angle neutron scattering measurements on micellar solutions of sodium alkylbenzenesulfonates having branched alkyl groups

Journal Article · Wed Jan 20 23:00:00 EST 1982 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100391a005· OSTI ID:5689840

Magid, L J ^[1]; Triolo, R; Johnson, Jr, J S; Koehler, W C

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1. Univ. of Tennessee, Knoxville

The normal spherical micelles formed by sodium p-(1-pentylheptyl)benzenesulfonate have Guinier radii (R/sub G/), as determined by small-angle neutron scattering (SANS), of 13.7 to 16.6 A in the concentration range 0.0099 to 0.0991 M in D/sub 2/O at 45/sup 0/C. Scattering curves for the more concentrated solutions show an interaction peak which is undoubtedly due to micelle-micelle repulsion. A longer-chain homologue, sodium p-(1-heptylnonyl)benzenesulfonate (also called Texas No. 1), for which there has previously been some question about micelle formation, is also shown to form small, normal micelles (R/sub G/ = 17 A) in aqueous solution.

• OSTI ID: 5689840
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 86:2; ISSN JPCHA
• Country of Publication: United States
• Language: English

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COHERENT SCATTERING
DATA
DIFFRACTION
ESTERS
EXPERIMENTAL DATA
HEAVY WATER
HYDROGEN COMPOUNDS
INFORMATION
MEDIUM TEMPERATURE
MICELLAR SYSTEMS
NEUTRON DIFFRACTION
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PETROLEUM SULFONATES
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STRUCTURAL CHEMICAL ANALYSIS
SULFONATES
SULFONIC ACID ESTERS
SURFACTANTS
WATER