Although new energy has been widely used in our lives, oil is still one of the main sources world. After application traditional recovery methods, there are a large number layers that have not exploited, and need to further increase meet urgent for world economic development. Chemically enhanced (CEOR) considered be kind effective technology, which achieved good results field, but these technol...

Thin liquid films are central to everyday life. They are ubiquitous in modern technology (pharmaceuticals, coatings), consumer products (foams, emulsions) and also serve vital biological functions (tear film of the eye, pulmonary surfactants in the lung). A common feature in all these examples is the presence of surface-active molecules at the air-liquid interface. Though they form only molecul...

Self-assembly in mixtures of cationic and anionic surfactants occurs synergistically because of attractive interactions between the oppositely charged headgroups. Here, such effects are exploited to obtain highly viscoelastic fluids at low total surfactant concentration. The systems considered are mixtures of the C18tailed anionic surfactant, sodium oleate (NaOA), and cationic surfactants from ...

Self-assembled polyelectrolyte–surfactant complexes in the solid state and as nanoparticles are the topic of this review. These materials combine the properties of polymers (mechanical stability) and surfactants (formation of highly ordered mesophases). Their building principle is modular which allows a great variety in their designing as well as their structural and functional properties. Typi...

The ability of nonionic surfactants to modulate the rheological characteristics of comblike hydrophobically modified associative polymer solutions containing cyclodextrin (CD) is examined. Addition of either alpha- or beta-CD to these polymers results in a marked decrease in solution viscosity and viscoelastic properties because of the encapsulation of the polymer hydrophobes by CD. Nonionic su...

Korhonen, M., 2003. Rheological properties of pharmaceutical creams containing sorbitan fatty acid ester surfactants. ISBN 952-91-6585-4 (paperback) ISBN 952-10-1476-8 (PDF) The main purpose of the present study was to gain understanding about the rheological (elastic, viscoelastic and viscous) properties of pharmaceutical creams containing sorbitan fatty acid ester surfactants (sorbitan monola...

This work reports the elaboration and structural study of new hybrid organic-inorganic materials constructed via the coupling of liquid-crystalline nonionic surfactants and polyoxometalates (POMs). X-ray scattering and polarized light microscopy demonstrate that these hybrid materials, highly loaded with POMs (up to 18 wt %), are nanocomposites of liquid-crystalline lamellar structure (Lalpha),...