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Polymer-surfactant mixtures

During my PhD, at Cambridge University,  I worked together with Patrick Warren of Unilever R&D Port Sunlight, to construct models for the behaviour of mixtures of charged polymers (polyelectrolytes) and oppositely charged surfactants. In particular, we considered how a charged polymer might be expected to behave close to a micelle, or spherical aggregate, of oppositely-charged surfactant. To do this, we used theoretical tools in which the polymer molecule is represented as a continuum "soup" of monomers, with the chain connectivity being represented by gradient terms in a continuum equation for the monomer volume fraction. We were able to solve these equations numerically in the correct geometry corresponding to the charged spherical micelle. Our results, published in two papers in Langmuir and Europhysics Letters, predicted that one can obtain phase separation of these polymer-surfactant mixtures into dilute and dense phases of micelles surrounded by polymer. 

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25/08/2022

Here is a great 3 minute video of our PhD student Freya Bull describing her research modelling bacterial infection of a urinary catheter!

25/08/2022

We are searching for a part-time computer systems administrator for our group in Jena. Please contact us if you are interested!

18/08/2022

Welcome to Ariane Zander who has joined us as a technician in our lab!

 
 

 

 
 
 
 
 
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