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Rheology is the study of flow and deformation of materials under applied forces. The measurement of rheological properties is applicable to all materials – from fluids such as dilute solutions of polymers and surfactants through to concentrated protein formulations, to semi-solids such as pastes and creams, to molten or solid polymers. Rheological properties can be measured from bulk sample deformation using a mechanical rheometer, or on a micro-scale by using a microcapillary viscometer or an optical technique such as Microrheology.

Many commonly-used materials and formulations exhibit complex rheological properties, whose viscosity and viscoelasticity can vary depending upon the external conditions applied, such as stress, strain, timescale and temperature. Internal sample variations such as protein concentration and stability, and formulation type for biopharmaceuticals, are also key factors that determine rheological properties.

Rheological properties impact at all stages of material use across multiple industries – from formulation development and stability to processing to product performance. Examples of rheological measurements include:

  • Viscosity profiling for non-Newtonian shear-dependent behavior to simulate processing or use conditions.
  • Viscoelastic fingerprinting for material classification to determine extent of solid-like or liquid-like behavior.
  • Optimising dispersion stability.
  • Determination of thixotropy of paints and coatings for product application and final finish quality.
  • Impact of molecular architecture of polymers on viscoelasticity for processing and end-use performance.
  • Benchmarking Food and Personal Care products for ability to pump or spread.
  • Full cure profiling for bonding or gelling systems.
  • Preformulation screening for therapeutics, particularly biopharmaceuticals.

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Optimize ceramic inkjet ink printability, stability & behavior using rheology Webinar - Live (English)

The printing flexibility that inkjet technology offers is enabling rapid growth in industrial and commercial applications including the decoration of ceramic substrates Inkjet inks must meet certain criteria; firstly they...

Product:
m-VROCi
Date:
May 7 2014
Language:
English

Keywords: English Rheology and viscosity Rheometry - rotational Paints, inks and coatings Webinar - Live Eastern Time m-VROCi Rheometry - microfluidic flow 

Optimizing Rheology for Ceramic Inkjet Inks Application Note (English)

Characterizing an inkjet ink formulation from stability through to printhead compatibility requires specific rheological methodology and shear rate range measurements, with pigment particle size and loading being key factors affectin...


Keywords: English Application Note Kinexus range Particle size Rheology and viscosity Dynamic Light Scattering Rheometry - rotational Paints, inks and coatings Zetasizer Nano range m-VROCi Rheometry - microfluidic flow 

m-VROCi Technology and Measurement Principle Technical Note (English)

Microfluidic Viscometer/Rheometer on a Chip technology using a microscale flow channel and MEMS sensors enables high resolution viscosity data for low viscosity materials up to ultra-high shear rates.


Keywords: English Technical Note Rheology and viscosity m-VROCi Rheometry - microfluidic flow 

Measuring flow curves for low viscosity inkjet inks up to ultra-high shear rates for print head compatibility Application Note (English)

Low viscosity, complex inkjet ink formulations undergo ultra-high shear rates in a print head, and the ability to characterize viscosity, including possible non-Newtonian behavior in this flow regime using a microfluidic rheometry technique, ...


Keywords: English Application Note Rheology and viscosity Paints, inks and coatings m-VROCi Rheometry - microfluidic flow 

Accurate low viscosity measurements of electrolyte solutions for the development of high performance rechargeable batteries Application Note (English)

Electrolyte viscosity for lithium ion rechargeable batteries is an important parameter to optimize for high performance, and microfluidic viscometry can meet the challenges involved in measuring low viscosity solvent mixtures for this applica...


Keywords: English Application Note Rheology and viscosity Batteries m-VROCi Rheometry - microfluidic flow 
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Optimize ceramic inkjet ink printability, stability & behavior using rheology
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