Saloplastics are salt complexes of oppositely charged polyelectrolytes, that can be processed like thermoplastics, and used as membranes and coatings in a wide range of applications. Appealing features of saloplastics include solvent-free processability in saline solutions, where the salts weaken the inter-polymer interactions enabling the creation of various morphologies including membranes and films. Sustainable polyelectrolytes can be derived from sustainable sources such as chitosan from shell-fish waste and alginate from seaweed, which allows for a green delivery of cargo thus reducing microplastic pollution [1]. Due to their inherent bio-compatibility and non-toxicity, bio-polymer salopastics are particularly useful for pharmaceutical and food applications.

In this project, we will build on previous biopolymer modelling work at the University of Strathclyde to model the formation of saloplastics [2,3]. The computational models will allow the systematic exploration of the impact of pH, salt type and concentration on the plastic properties such as mechanical strength and selective inhibition of diffusing species. From this understanding, we aim to optimise the properties for use in engineering applications, such as delivery of functional cargo and drug release.

The project is suited to students interested in computational modelling with real world applications, supervised by experienced scientists while collaborating with experimentalists and reaching out to industrial partners through conference presentations and journal publications. In this way, the student can expect to develop vital skills for a career in sustainable materials engineering

References

[1] Løvschall, K. B., Velasquez, S. T. R., et al. Enhancing stability and efficacy of Trichoderma bio-control agents through layer-by-layer encapsulation for sustainable plant protection. Advanced Sustainable Systems, 8(7), 2300409 (2024).

[2] M Hudek, K Johnston, K Kubiak-Ossowska, VA Ferro, PA Mulheran. Molecular Dynamics Study of Chitosan Adsorption at a Silica Surface, J. Phys, Chem. C128, 21531 (2024).

[3] A Wood, PA Mulheran, K Johnston. A molecular dynamics investigation of oligomer structure and cation behaviour in pure and blended alginate systems (in preparation).

Postgraduate Certificate in Researcher Development (PGCert)

In addition to undertaking cutting-edge research, students are also registered for the Postgraduate Certificate in Researcher Development, which is a supplementary qualification that develops a student’s skills, networks and career prospects.

Further information

Further information about the Chemical Engineering department

Further information about the Chemical Engineering PhD