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Physical Properties and Material Characterisation Faculty of Engineering & Science

We can characterise solids, such as polymers, minerals, powders and particulate formulations, using a range of techniques for quantifying macroscopic behaviour including:

  • Particle size analysis by laser diffraction or dynamic light scattering
  • Rheology (controlled stress/shear and temperature)
  • Electron Microscopy
  • Aqueous gel permeation chromatography (GPC).

Thermal properties:

  • Calorific value using bomb calorimetry
  • Thermogravimetric Analysis (TGA), TGA-FTIR:
    • water content
    • oxidation
    • degradation pathway and decomposition
  • Hot Stage Microscopy (HSM):
    • phase transitions
    • softening
    • crystalline habits
    • size distribution
  • Differential Scanning Calorimetry (DSC):
    • 1st and 2nd order transitions
    • glass transition, polymorphic transitions, crystallisation, melting
  • Thermally Stimulated Current (TSC) Spectroscopy:
    • α, β and γ transitions in materials
    • molecular motions over a wide temperature range (-160C to 250C)
    • cooperative and non-cooperative rearrangements
    • relaxation map analysis
    • calculation of activation energies for relaxation processes
    • These techniques can be provided with the backing of considerable knowledge in the particular areas of pharmaceutical formulation science and technology, characterisation of clays and other minerals and in structural and material engineering.