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Rotational rheometry is a powerful technique for the measurement of complex shear rheology across all material types – sensitive enough to measure the viscosity of dilute polymer solutions, and yet robust enough to measure the viscoelasticity of high modulus polymers or composites. Rotational rheometry is ideal for discerning structural and compositional changes of materials, which can be critical controlling factors in flow and deformation properties, and ultimately product stability and performance.
The basics of the rotational rheometry technique are as follows:
Rotational rheometry also enables other rheological properties to be evaluated, including yield stress, thixotropy, creep and recovery and stress relaxation.
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Rheology is defined as the science of deformation and flow and in particular refers to materials that show viscoelastic or non-Newtonian behaviour when stressed. Such materials include suspensions, emulsions, polymer solutions and foams to name but a...
This webinar discusses the use of the flexible gapping system of Kinexus to allow the use of a range of novel geometries to measure otherwise difficult to characterise disperse systems. Comparisons will be made on model systems, a zero-shear viscosit...
This poster shows how Rheometry and GPC can be complementary tools for characterizing the behaviour of polysaccharides in solution
This application note discusses the methodology and results for the rheological characterization of Opthalmic Viscosurgical Devices (OVDs) according to the International Standard ISO15798:2013
This article highlights how engineering high performance ceramic inkjet inks relies on measuring viscosity across the broad range of shear rates experienced during printing. This shear range can be accessed by combining rotational rheometry for low s...
(Webinar - Recorded)
Rheology masterclass 1 - The basic of viscosity
(March 31 2015)
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