Kinetics of alignment and decay in a highly entangled transient threadlike micellar network studied by small-angle neutron scattering

Journal Article · Thu Jan 11 04:00:00 EST 1996 · Journal of Physical Chemistry

DOI:https://doi.org/10.1021/jp9522977· OSTI ID:196640

Butler, P D; Magid, L J ^[1]; Hamilton, W A; Hayter, J B ^[2]; Hammouda, B ^[3]; Kreke, P J ^[1]

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1. Univ. of Tennessee, Knoxville, TN (United States)
2. Oak Ridge National Lab., TN (United States)
3. National Inst. of Standards and Technology, Gaithersburg, MD (United States)

We report on a study of the kinetics of alignment and decay of alignment, using small-angle neutron scattering (SANS) of a complex fluid under Couette shear containing a highly entangled network of threadlike micelles. The time scales of alignment revealed are dominated by the collective properties of the network rather than the individual micellar segements. This results in rates orders of magnitude slower than any previously observed in similar systems as well as in the first observation of an alignment proceeding in two stages. 21 refs., 4 figs.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 196640
• Journal Information: Journal of Physical Chemistry, Journal Name: Journal of Physical Chemistry Journal Issue: 2 Vol. 100; ISSN JPCHAX; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
42 ENGINEERING
ALIGNMENT
COHERENT SCATTERING
FLUID FLOW
KINETICS
MICELLAR SYSTEMS
NEUTRON DIFFRACTION
PHYSICAL CHEMISTRY
SHEAR
STRUCTURAL CHEMICAL ANALYSIS
SURFACTANTS