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Department of Chemical Engineering and Biotechnology


Research Group: Paste, Particle and Polymer Processing group (P4G)

Research topic: Research project in the extrusion of hardmetal pastes, involving extrusion experiments on a pharmaceutical-based model paste and a ceramic test paste. Lab-scale ram extruders are used for material property estimation and for modelling studies, using custom experimental rigs to track the frictional shear stress of the paste against the walls of a die chamber. Finite element analysis software, ABAQUS is used to simulate the flow of paste in extrusion geometries. 


  • Extrusion and flow of paste materials.
  • Measurement and modelling of wall friction.
  • Simulation of paste extrusion.
  • ABAQUS/Explicit simulation.


Prior qualifications: MEng in Chemical Engineering from the department of Chemical Engineering and Biotechnology, University of Cambridge.


Key publications: 

H.C. Ayton, S.L. Rough, M.P.F. Sutcliffe, P. Müller, J. Schäfer, D.I. Wilson, Measurement and modelling of wall friction in the ram extrusion of stiff microcrystalline cellulose-based pastes, Powder Technology, Volume 377, 2021, Pages 780-794, ISSN 0032-5910, (

Teaching and Supervisions

Research supervision: 

Supervision courses:

  • CET IIA Separations processes course
  • CET IIA Equilibrium Thermodynamics
  • CET IIA Partial Differential Equations
  • CET IIB CFD Course demonstrator.


  • Teaching lab (CET IA) demonstrator.
PhD student

Contact Details

Email address: