37 datasets found

We will study the temperature dependence of carbon nanotubes in solutions using small angle neutron scattering, to investigate in particular the rebundling when the free energy...

In recent years, there has been an enormous interest in the study of surfactants for supercritical CO2 (scCO2). One important potential application of these materials is in...

The research topic is Low surface energy materials (LSEMs), and development of new hydrocarbon (HC) architectures as replacements for environmentally hazardous fluorocarbon...

For the last two decades, many polymers have been tested to increase CO2 viscosity for enhanced oil recovery. Unfortunately, HC-polymers were found to be inactive for the...

This proposal is the first part of a fundamental study aiming to improve understanding about technically challenging water-in-CO2 (w/c) microemulsions, by firstly investigating...

For twenty years scientists have been searching for surfactants able to solubilise water nano-domains in supercritical carbon dioxide, scCO2 (as water-in-scCO2 microemulsions,...

Recent studies implied an unusual headgroup (HG)-free, fluorocarbon (FC) surfactant Nohead FC6-HC4 to form stable, W/CO2 nanodispersions (W/C NDs). With the unusual surfactant...

Due to the naturally low viscosity of liquid CO2 (0.1-1.0 cP pressure/temperature dependent) the CO2 is prone to ¿fingering¿, limiting the efficiency of CO2-EOR [1]. In order to...

Over the last two decades, many polymers have been tested to increase CO2 viscosity for applications in enhanced oil recovery using CO2 (CO2-EOR). Unfortunately, conventional...

Results from this experiment will help develop to design 21st century surfactants (better performance with lower environmental consequences) by gaining essential information on...

This proposal aims to explore optimal fluorine (F) content and chain architecture in triple-fluorocarbon (FC)-tail surfactants used as CO2-philic solubilizers for water-in-CO2...

Surfactant systems responsive to pH, temperature, CO2, and light are known. Our new work has shown for the first time, magneto-responsive surfactants (also being ionic liquids...

One of the most commonly used supercritical fluids is carbon dioxide (scCO2) which is non-toxic, non-flammable, abundant and has an easily accessible critical point. An...

For the last two decades, many polymers have been tested to increase CO2 viscosity for enhanced oil recovery using CO2 (CO2-EOR). Unfortunately, conventional HC-polymers were...

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...

An unusual set of systems, displaying key characteristics of microemulsions have been discovered using highly branched chain anionic surfactant stabilizers (Figure 1)....

The behaviour of multiple polymers in competition for colloidal silica has previously been investigated in our group using solvent relaxation nuclear magnetic resonance. We...

The research topic is Low surface energy materials (LSEMs), and development of new hydrocarbon architectures as replacements for environmentally hazardous fluorocarbon...

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...

The research topic is encapsulation of a hydrophobic drug, flurbiprofen, using novel amphiphilic graft copolymers (AGCs). The AGCs of interest are shown in Figure 1: Preliminary...