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Mixed surfactants for positive synergism in dense CO2
This proposal aims to explore a cheaper and more environmental-benign surfactant system for yielding efficient water/CO2 microemulsions. The new surfactants permit high... -
Can water-in-supercritical CO2 nanodispersions be stabilized without the aid ...
Recent SANS studies of an unusual headgroup (HG)-free, fluorocarbon (FC) surfactant (Nohead FC6-HC4) produced data that implied the formation of stable, W/CO2 nanodispersions... -
Concentrated emulsions as proxy CO2 thickeners
The proposal aims to explore the oil-in-water (brine) high internal phase emulsion systems (HIPEs) formed by nonylphenol ethoxylate surfactants using contrast variation SANS... -
CO2 foams stabilized by W/CO2 interfacially active hydrocarbon surfactants an...
CO2 foams can be formed in water/carbon dioxide (W/CO2) mixtures with the aid of W/CO2 interfacially active hydrocarbon surfactants and surface treated silica nanoparticles... -
Practical viscosifiers for supercritical CO2
This proposal explores headgroup-free, fluorocarbon-hydrocarbon hybrid compounds able toform viscous elongated aggregates in supercritical CO2 with the aim of improving... -
Nonfluorous Cosurfactant/Hyperbranched Surfactant Mixtures for W/CO2 Microemu...
This proposal aims to explore cheap and environmental-benign cosurfactants (or cosolvents) for yielding CO2-philic hydrocarbon surfactant/water/CO2 microemulsions (W/CO2... -
Self-assembly of low surface energy single chain surfactants at low and high ...
The research topic is Green Low Surface Energy Materials (LSEMs), with the aim to develop new hydrocarbon (HC) architectures to replace environmentally hazardous fluorocarbon... -
Practical viscosifiers for supercritical CO2
This proposal explores headgroup-free, fluorocarbon-hydrocarbon hybrid compounds able toform viscous elongated aggregates in supercritical CO2 with the aim of improving... -
The formation of elongated aggregates in supercritical CO2 through the mixing...
This proposal involves manipulating the curvature of aggregated polar materials in supercritical CO2 (scCO2) by tuning the mixing ratio of fluorocarbon (FC) and hydrocarbon (HC)... -
Micelles of highly branched surfactants at the design limit
Results from this experiment will help develop to design 21st century surfactants (better performance with lower environmental consequences) by gaining essential information on... -
The formation of elongated aggregates in supercritical CO2 through the mixing...
This proposal involves manipulating the curvature of aggregated polar materials in supercritical CO2 (scCO2) by tuning the mixing ratio of fluorocarbon (FC) and hydrocarbon (HC)... -
Opening up microemulsion phases in CO2
New types of water-in-CO2 microemulsions using mixed surfactant systems will be investigated by high-pressure SANS (HP-SANS). Exciting new results (see report on RB820030) have... -
Quad-chain surfactants for CO2
In recent years much progress has been made in the design of surfactants that are soluble in liquid CO2; hence these additives able to modify physicochemical properties... -
Tuning morphology of nonionic highly-methylated surfactant/water/CO2 assemblies
This proposal aims to explore a cheaper and more environmental-benign surfactants for microemulsion formation in CO2; in other words, a low fluorine containing... -
Tuning micellar interfacial curvature in CO2 by small molecule additives
This proposal aims to explore co-surfactants, as additives with CO2-active surfactants, for elongating reversed micelles in dense CO2 by using high-pressure small-angle neutron... -
Organogels for applications in CO2
This proposal aims to explore organogel systems, like those recently decsribed1-3, but made from new CO2 philic surfactant-gelators. These have been synthesised to feature... -
Are hydrotropes a unique class of solutes?
The aim is to improve understanding of solution properties and aggregation of hydrotropes and alkyl¿hydrotropes, and the relationship with common surfactants. Although they are... -
Manipulation of the aggregate curvature in water/dense CO2 system
This proposal aims to investigate how the curvature of surfactant assemblies in water/dense CO2 systems can be tuned via the design and mixing of CO2-phillic surfactants. One... -
Optimising chemical structure of CO2-philic hybrid surfactants for stabilisin...
The proposal aims to explore water-in-CO2 (w/c) microemulsions with very promising hybridCO2-philic surfactants. The surfactants have been systematically synthesised... -
Measuring the bending rigidity of surfactant films in water-in-CO2 microemu...
This proposal aims to expand knowledge about water-in-CO2(w/c) microemulsions by studying the ¿bending rigidity¿ of surfactant films, which has been frequently tested on normal...
