Malvern showcases rheology and particle characterisation systems at K2007

29 Jul 2007

Product news

Visitors to the Malvern Instruments stand at K2007 (24-31 October 2007, Düsseldorf, Germany) will have the opportunity to learn more about the latest plastics industry applications for the company’s extensive range of rheometers and particle characterisation systems.

With outstanding digital drive systems, Malvern’s advanced capillary rheometers, including the Rosand RH10 and the benchtop RH2000, deliver high-level performance for plastics and other material applications. They will be exhibited alongside Malvern’s Gemini HR nano rotational rheometer, a valuable tool for exploring viscoelasticity. Laser diffraction and image analysis systems for particle size and shape measurement complete the line up.

The viscoelastic properties of polymers reveal important information about molecular architecture, processing behaviour and end product performance. Capillary rheometry is particularly relevant for polymer processors, allowing investigation of commonly encountered processing phenomena such as melt fracture, die swell and sharkskin.

The RH10 is a powerful floor-standing capillary rheometer used in research laboratories throughout the world; the RH2000 is a bench scale instrument ideally suited to routine QC analysis. Both have exceptional accuracy and speed control, and a very wide dynamic operating range. They are supplied with the latest Flowmaster™ software, offering a range of new experimental options.

Malvern's extensive knowledge and experience of laser diffraction is encapsulated in the Mastersizer 2000, an automated instrument used worldwide for particle size measurement. Easy-to-use, with exceptional reproducibility the Mastersizer 2000 is frequently the preferred option for the measurement of wet and dry samples in the size range from 0.02 – 2000 microns.

For applications additionally requiring shape information image analysis is appropriate. Morphologi is an automated image analysis system for the measurement of particle size and shape. Ideal for applications based on classification, such as the detection of foreign material, the images captured additionally provide information about optical density, homogeneity and particle structure.

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RheometryRheometers are used to measure the rheology of fluids, which is the flow of fluids in response to an applied force. The most common types of rheometer include shear rheometers (capillary, cone and plate and rotational cylinder) and extensional rheometers. Viscometers are similar to rheometers however viscometers only measure the viscosity of a fluid.Particle CharacterizationParticle characterization instruments are used to determine particle size distribution, shape, surface area, zeta potential, density and porosity of particles and materials. Multiple tecchniques are available for determining particle size, shape and count including dynamic light scattering (DLS), laser diffraction, electrozone (Coulter technique), imaging particle analysis and single particle optical sensing. Determine the density of your material with a gas pycnometer or examine its surface area and porosity with gas adsorption analyzers and mercury porosimeters. Find the best particle characterization instruments in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.