2014 We first deduce the rigidity coefficient K of a surfactant monolayer at the oil water interface from ellipsometric measurements. For our surfactant monolayer containing alcohol, we find unusually small values of K (K ~ kB T). We then study the oil microemulsion and water microemulsion interfaces, covered with the same film. On the microemulsion side of the film we find a perturbed zone, th...

The droplet phase of a reverse microemulsion formed by the surfactant cetyltrimethylammonium ferrocyanide was used as a matrix to synthesize nanoparticles of nickel hexacyanoferrate by adding just a solution of NiCl2 to the microemulsion media. Dynamic light scattering and small-angle neutron scattering measurements show that the reverse microemulsion droplets employed have a globular structure...

Small-angle neutron scattering (SANS) studies of reversible addition-fragmentation chain transfer (RAFT) microemulsion polymerizations of butyl acrylate and 2-ethylhexyl acrylate with the RAFT agent methyl2-(O-ethylxanthyl)propionate (MOEP) allow the observed rate retardation to be attributed to slow fragmentation of the macro-RAFT radical. Microemulsion polymerization allows the RAFT mechanism...

The dynamic structure factor G(k, ω) is studied in a time-dependent Ginzburg-Landau model for microemulsion and sponge phases in thermal equilibrium by field-theoretic perturbation methods. In bulk contrast, we find that for sufficiently small viscosity η, the structure factor develops a peak at non-zero frequency ω, for fixed wavenumber k with k 0 < k < ∼ q. Here, 2π/q is the typical domain si...

Association of C 3 -symmetric pyrene- and naphthalene diimide-based derivatives afforded gels through aromatic interactions. The corresponding (xero)gels displayed original spectroscopic features in comparison to the one-component materials.

OBJECTIVE To deliver 2,3,5,6-tetramethylpyrazine (TMP) in a relatively large dose through a transdermal route and facilitate the practical application of microemulison in transdermal drug delivery. METHODS The pseudo-ternary phase diagram for microemulsion regions was constructed using isopropyl myristate as oil phase, Labrasol(®) as surfactant, and Plurol(®) Oleique CC 497 as cosurfactant. A...