Mesostructure in Cat-anionic Surfactant-Polymer Films
Lead Research Organisation:
University of Bath
Department Name: Chemistry
Abstract
This proposal is for travel to undertake experiments using neutron reflectivity on the new instrument Platypus on the OPAL reactor at ANSTO in Sydney. It is difficult to obtain neutron reflectivity beamtime for open liquid surface samples due to the small number of instruments world-wide which are configured to take samples in this geometry and the popularity of this technique which means existing instruments are generally oversubscribed. We have succeeded in obtaining 2 days of beamtime in a competitive peer reviewed proposal scheme, on this brand new instrument, and now request travel funding to go to Sydney to carry out this experiment. The work continues our investigations into polyelectrolyte-surfactant solutions which form solid films by adsorption at the air-solution interface funded under EPSRC grant EP/E029914/1. Our initial investigations focused on the polyethylenimine-cationic surfactant system but we have now found that film formation is a general feature of solutions containing mixed aggregates of a cationic and an anionic surfactant in the presence of water soluble polymers. This enables use of biocompatible polymers which mean these films may be able to be used in enacapsulation of therapeutics for controlled delivery applications for instance in wound dressings. In this neutron reflectivity experiment we will make use of contrast variation in order to determine the proportion of each surfactant in the mesostructures of films containing CTAB and SDS with polyethylene oxide or polyacrylamide. We will investigate several different total surfactant and polymer concentrations for five CTAB:SDS ratios to study the effects on structures formed in this system. While in Sydney we have also been invited to visit Prof Greg Warr at the School of Chemistry, Sydney University to give a seminar and to observe a modified small angle X-ray scattering instrument similar to an instrument in Dr Edler's lab in Bath, with a view to implementing this modification on the Bath instrument.
People |
ORCID iD |
| Karen Edler (Principal Investigator) |
Publications
Edler KJ
(2013)
Formation of mesostructured thin films at the air-liquid interface.
in Chemical Society reviews
Gustavsson C
(2014)
Water-responsive internally structured polymer-surfactant films on solid surfaces.
in Langmuir : the ACS journal of surfaces and colloids
Mokhtari T
(2014)
Controlling interfacial film formation in mixed polymer-surfactant systems by changing the vapor phase.
in Langmuir : the ACS journal of surfaces and colloids
| Description | This proposal was for travel, for Dr Edler and a PhD student Matthew Wasbrough, to undertake experiments using neutron reflectivity on the new instrument Platypus at the Bragg Institute, ANSTO in Sydney. We obtained 2 days of beamtime in a competitive peer reviewed proposal scheme on this brand new instrument, and requested travel funding to carry out this experiment. The reflectivity experiment continued our studies of polyelectrolyte-surfactant solutions which form solid films at the air-solu |
| Exploitation Route | The films may find use in drug delivery, templates for new materials, sensor supports, responsive membranes |
| Sectors | Agriculture, Food and Drink,Chemicals,Healthcare,Pharmaceuticals and Medical Biotechnology |
| Description | Currently films are under investigation for drug delivery with collaborators at Reading University. |
| First Year Of Impact | 2013 |
| Sector | Pharmaceuticals and Medical Biotechnology |
| Description | EPSRC Directed Assembly Pump-priming Award |
| Amount | £14,498 (GBP) |
| Funding ID | PP13 05 02 |
| Organisation | Engineering and Physical Sciences Research Council (EPSRC) |
| Sector | Public |
| Country | United Kingdom |
| Start | 07/2013 |
| End | 04/2014 |
| Description | Polyelectrolyte-Surfactant Interactions in Film Forming Solutions |
| Organisation | Higher Institute of Applied Sciences and Technologies |
| Country | Cuba |
| Sector | Academic/University |
| PI Contribution | Collaboration to do research on formation mechanisms and polyelectrolyte-surfactant Interactions in film forming solutions with collaborators from InSTEC, Havana, Cuba. Funded by Royal Society. |
| Collaborator Contribution | Research on formation mechanisms and properties of polyelectrolyte-surfactant interactions in film forming solutions |
| Impact | 10.1039/b700942a, 10.1016/j.jcis.2009.07.067, 10.1039/C3SM27541H Chemistry, physical chemistry, analytical chemistry. |
| Description | Polyelectrolyte-Surfactant Interactions in Film Forming Solutions |
| Organisation | Higher Institute of Applied Sciences and Technologies |
| Country | Cuba |
| Sector | Academic/University |
| PI Contribution | Collaboration to do research on formation mechanisms and polyelectrolyte-surfactant Interactions in film forming solutions with collaborators from InSTEC, Havana, Cuba. Funded by Royal Society. |
| Collaborator Contribution | Research on formation mechanisms and properties of polyelectrolyte-surfactant interactions in film forming solutions |
| Impact | 10.1039/b700942a, 10.1016/j.jcis.2009.07.067, 10.1039/C3SM27541H Chemistry, physical chemistry, analytical chemistry. |
| Description | Polyelectrolyte-Surfactant Interactions in Film Forming Solutions |
| Organisation | Higher Institute of Applied Sciences and Technologies |
| Country | Cuba |
| Sector | Academic/University |
| PI Contribution | Collaboration to do research on formation mechanisms and polyelectrolyte-surfactant Interactions in film forming solutions with collaborators from InSTEC, Havana, Cuba. Funded by Royal Society. |
| Collaborator Contribution | Research on formation mechanisms and properties of polyelectrolyte-surfactant interactions in film forming solutions |
| Impact | 10.1039/b700942a, 10.1016/j.jcis.2009.07.067, 10.1039/C3SM27541H Chemistry, physical chemistry, analytical chemistry. |
| Description | Polyelectrolyte-Surfactant Interactions in Film Forming Solutions |
| Organisation | Higher Institute of Applied Sciences and Technologies |
| Country | Cuba |
| Sector | Academic/University |
| PI Contribution | Collaboration to do research on formation mechanisms and polyelectrolyte-surfactant Interactions in film forming solutions with collaborators from InSTEC, Havana, Cuba. Funded by Royal Society. |
| Collaborator Contribution | Research on formation mechanisms and properties of polyelectrolyte-surfactant interactions in film forming solutions |
| Impact | 10.1039/b700942a, 10.1016/j.jcis.2009.07.067, 10.1039/C3SM27541H Chemistry, physical chemistry, analytical chemistry. |
| Description | Visiting Professorship at Lund University |
| Organisation | Lund University |
| Country | Sweden |
| Sector | Academic/University |
| PI Contribution | 1 year guest professorship 2012 at Physical Chemistry, Lund University, continuing at 10% per year 2013-2015. Chance to collaborate with several investigators in the extensive soft matter group at Physical Chemistry, in Lund on a range of projects from mesoporous inorganic oxides, to polymer-surfactant self-assembly. Co-supervision of PhD students. |
| Collaborator Contribution | Research into effects of humidity on polymer-surfactant films, nucleation of mesoporous inorganic oxides, formation of membranes of complex salts. |
| Impact | 10.1021/la503210g, 10.1063/1.4897282, 10.1021/la5010825, 10.1021/la9036327, 10.1021/la900867k Chemistry, physical chemistry, biophysical chemistry. |
| Start Year | 2009 |
| Description | Visiting Professorship at Lund University |
| Organisation | Lund University |
| Country | Sweden |
| Sector | Academic/University |
| PI Contribution | 1 year guest professorship 2012 at Physical Chemistry, Lund University, continuing at 10% per year 2013-2015. Chance to collaborate with several investigators in the extensive soft matter group at Physical Chemistry, in Lund on a range of projects from mesoporous inorganic oxides, to polymer-surfactant self-assembly. Co-supervision of PhD students. |
| Collaborator Contribution | Research into effects of humidity on polymer-surfactant films, nucleation of mesoporous inorganic oxides, formation of membranes of complex salts. |
| Impact | 10.1021/la503210g, 10.1063/1.4897282, 10.1021/la5010825, 10.1021/la9036327, 10.1021/la900867k Chemistry, physical chemistry, biophysical chemistry. |
| Start Year | 2009 |
| Description | Visiting Professorship at Lund University |
| Organisation | Lund University |
| Country | Sweden |
| Sector | Academic/University |
| PI Contribution | 1 year guest professorship 2012 at Physical Chemistry, Lund University, continuing at 10% per year 2013-2015. Chance to collaborate with several investigators in the extensive soft matter group at Physical Chemistry, in Lund on a range of projects from mesoporous inorganic oxides, to polymer-surfactant self-assembly. Co-supervision of PhD students. |
| Collaborator Contribution | Research into effects of humidity on polymer-surfactant films, nucleation of mesoporous inorganic oxides, formation of membranes of complex salts. |
| Impact | 10.1021/la503210g, 10.1063/1.4897282, 10.1021/la5010825, 10.1021/la9036327, 10.1021/la900867k Chemistry, physical chemistry, biophysical chemistry. |
| Start Year | 2009 |
| Description | Visiting Professorship at Lund University |
| Organisation | Lund University |
| Country | Sweden |
| Sector | Academic/University |
| PI Contribution | 1 year guest professorship 2012 at Physical Chemistry, Lund University, continuing at 10% per year 2013-2015. Chance to collaborate with several investigators in the extensive soft matter group at Physical Chemistry, in Lund on a range of projects from mesoporous inorganic oxides, to polymer-surfactant self-assembly. Co-supervision of PhD students. |
| Collaborator Contribution | Research into effects of humidity on polymer-surfactant films, nucleation of mesoporous inorganic oxides, formation of membranes of complex salts. |
| Impact | 10.1021/la503210g, 10.1063/1.4897282, 10.1021/la5010825, 10.1021/la9036327, 10.1021/la900867k Chemistry, physical chemistry, biophysical chemistry. |
| Start Year | 2009 |
| Description | Visiting Professorship at Lund University |
| Organisation | Lund University |
| Country | Sweden |
| Sector | Academic/University |
| PI Contribution | 1 year guest professorship 2012 at Physical Chemistry, Lund University, continuing at 10% per year 2013-2015. Chance to collaborate with several investigators in the extensive soft matter group at Physical Chemistry, in Lund on a range of projects from mesoporous inorganic oxides, to polymer-surfactant self-assembly. Co-supervision of PhD students. |
| Collaborator Contribution | Research into effects of humidity on polymer-surfactant films, nucleation of mesoporous inorganic oxides, formation of membranes of complex salts. |
| Impact | 10.1021/la503210g, 10.1063/1.4897282, 10.1021/la5010825, 10.1021/la9036327, 10.1021/la900867k Chemistry, physical chemistry, biophysical chemistry. |
| Start Year | 2009 |
| Title | modification to Bath SAXSess |
| Description | the Bath SAXSess was modified to allow pinhole operation as an option as well as slit beam shape (standard) operation. This resulted from observation of the similarly modified instrument at Sydney Uni, run by Prof Greg Warr. |
| Type Of Technology | New/Improved Technique/Technology |
| Year Produced | 2010 |
| Impact | Increased ability to analyse oriented samples on in house equipment. |
| Description | Structure of and encapsulation in Polyelectrolyte/Surfactant solutions and thin films |
| Form Of Engagement Activity | Scientific meeting (conference/symposium etc.) |
| Part Of Official Scheme? | No |
| Type Of Presentation | poster presentation |
| Geographic Reach | International |
| Primary Audience | Other academic audiences (collaborators, peers etc.) |
| Results and Impact | poster at XIV International Conference on Small-Angle Scattering (SAS2009), in Oxford, Sept.13th-18th. N/A |
| Year(s) Of Engagement Activity | 2009 |