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Structural evolution of a two-component organogel

delete2004-07-29
delete24
PRE
AI
M
Mohit Singh
G
Grace Tan
A
Agarwal, V
G
Gerhard Fritz
K
Karol Maskos
A
Arijit Bose
J
John, V *
G
Gary E. McPherson
DOI:10.1021/la0493870delete
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摘要

摘要

En 中文
Dry reverse micelles of AOT in isooctane spontaneously undergo a microstructural transition to an organogel upon the addition of a phenolic dopant, p-chlorophenol. This microstructural evolution has been studied through a combination of light scattering, small-angle neutron scattering (SANS), NMR, and rheology. Several equilibrium stages between the system of dry reverse micelles of ACT and a 1:1 AOT/p-chlorophenol (molar ratio) gel in isooctane have been examined. To achieve this, p-chlorophenol is added progressively to the dilute solutions of ACT in isooctane, and this concentration series is then analyzed. The dry micelles of ACT in isooctane do not undergo any detectable structural change up to a certain p-chlorophenol concentration. Upon a very small increment in the concentration of p-chlorophenol beyond this threshold concentration, large strandlike aggregates are observed which then evolve to the three-dimensional gel network.
Keyword:
ANGLE NEUTRON-SCATTERING
IN-OIL MICROEMULSIONS
X-RAY
ORGANIC LIQUIDS
CHOLESTEROL-STILBENE
GEL POINT
MICELLES
GELATORS
GELATION
WATER
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Langmuir
IF:
3.9
论文数:
5.4W
被引数:
10.6W

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