Techniques

With our partnership with Merrow Scientific and a range of niche scientific instrument manufacturers we are able to offer customers a wide range of unique characterisation techniques including:

Since Willow Analytical started we’ve run quite a few projects for companies looking at a range of techniques (e.g. DSC, thermal conductivity, rheology, density) and due to our wide range of techniques and over 50 years combined experience of laboratory materials analysis we can offer a wide range of analysis to assist companies in their product understanding and development.  To arrange some testing or to discuss your application in more detail please contact us

Microrheology

rheolab

  • Stability/shelf life studies over long timescales (Days, weeks, months).
  • Measure rheological properties as a function of temperature/frequency.
  • Track cross-linking/gelation reactions (For example hydrogels).
  • Identify rheological properties of soft matter (colloids, emulsions, gels, solutions) at specific temperatures (between 4°C and 110°C).
  • Ability to measure particle sizes for concentrated samples.

Application areas include Bio-Pharma, Cosmetics, Toiletries, foodstuffs (Milk, Yogurt, Gelatin, Sauces), Hydrogels, Inks, paints, adhesives and coatings

More info on technique and technology

Thermal Conductivity Measurements

ctherm

  • Assessment of Thermal Characteristics – accurately evaluating the thermal properties of materials in solid, powder liquid and paste forms.
  • Accelerating R&D – speeding the scale up of products/formulations,
  • Service Life Monitoring – determining and monitoring the service life of critical materials, such as lubricants and in service structures.

Application areas include Polymers, Petroleum, Explosives, Nano-materials, Building Materials, Aerogels, Phase Change Materials, Heat Transfer Fluids, Cement and Concrete, Thin films, Textiles, Metals, Powders, Pharmaceuticals, Nanomaterials, Composites & Thermal Interface Materials.

More info on technique and technology

Viscosity

m-VROC with Water Bath and Software 2.JPG

  • Microfluidic and MEMs based technology widely adopted by leading Biopharma companies for small sample viscosity analysis (>20ul) and leading Ink institutes for wide shear rate range measurements (1 up to over 1,000,000 1/s)
  • Wide applications and compatibility with many solvents

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Automated High Throughput Viscosity Measurement

initium

  • Initium VROC- automated microfluidic MEMs viscometer
  • Measure samples as small as 20ul
  • Completely automated system for measuring up to 96 samples
  • Characterise Newtonian and Non-Newtonian samples

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Extensional Viscosity Measurement

e-vroc-viscometer-_-no-bdg

  • Extensional viscosity measured using the patented Rheosense e-VROC technology based on microfluid technology with a hyperbolic contraction/expansion zone in the centre
  • Measure viscosity over a wide strain rate range and on small samples
  • Extensional viscosity links to properties when materials flow into a constricted area or such parameters as the tail of a droplet in a printing or spraying process

More info on technique and technology

Rheology

rheometer 1

  • Measure viscosities from 0.4mPaS upwards
  • Variety of fixtures including concentric cylinders, cone and plate, parallel plate to cover a wide range of applications, and viscosity and shear rate ranges
  • Temperature range from -20C up to 200C (with high temperature option)
  • Measure viscosity, gel point/temperature, visco-elastic properties, thixotropy, shear thinning/recovery, creep, linear viscoelastic region

DSC Measurements

q2000-dsc

  • Measure the Heat flow properties of materials between -90°C to +400°C.
  • Ideal tool for measuring melting, re-crystallisation, curing, Polymorphism, Oxidation temperatures and times, Heat capacity, Glass transition range, Thermal and oxidative stability.
  • Small sample quantities required for analysis (few mg’s). A 50 position auto-sampler is available for fast turn-around.
  • Modulated DSC available for increased sensitivity to measuring transitions.
  • Range of sample pans available to contain samples (Hermetic for providing an air tight seal to prevent volatile loss, Crimped pans for providing good physical contact between sample and pan, Large volume pans for improved sensitivity in detecting low energy transitions)

DSC and Modulated DSC widely used to characterise thermoplastics, thermosets, pharmaceuticals, biological materials, foodstuffs and inorganics.

DMA Measurements

q800-dma

  • Dynamic Mechanical Analysis (DMA) can be used to measure the mechanical properties of a wide range of material classes over a broad temperature range (-150°C to +600°C).
  • Materials can be investigated as bars, rods, tubes, powders, thin films, fibres & threads, liquids and pastes/resins (supported on an inert substrate).
  • Wide range of deformation modes available: single and dual cantilever, 3 point bending, compression, tension and shear. Submersion options available.
  • Wide range of operating modes available to characterise Viscoelastic nature, Linear Viscoelastic Region (LVR), Creep and Stress-relaxation properties.
  • Widely used to measure Glass transition and Beta relaxations of a wide range of material types.

DMA is widely used to characterise thermoplastics, elastomers, composites, pre-pregs and thermosetting resins, thin films, mono-filament fibres, yarns, meshes, medical devices, textiles, coatings, packaging materials and foodstuffs.

High Temperature TG-DSC and Evolved Gas Analysis

  • Simultaneous thermogravimetry and differential scanning calorimetry (or separate) carried out on the same instrument
  • Analysis from ambient to high temperature (1500C)
  • Option to couple to a mass spec for evolved gas analysis
  • Identify phase change and degradations and enable higher accuracy of quantitative DSC measurements
  • Measure phase transitions of metals, alloys, ceramics, cements and inorganic materials
  • Wide range of pan types for different applications

To arrange some testing or to discuss your application in more detail please contact us