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Extensional Rheology & Analytics of Material Characterization

Extensional Rheology & Analytics of Material Characterization OVERVIEW Extensional flows are important to converging and squeezing flows that occur in polymer processing operations such as injection molding, extrusion, blow molding, film blowing and calendering. Uniaxial extensional flow measurement is particularly useful in polymer characterization because it is the ‘strongest’ flow field one can generate with…

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Extensional Rheology in Polymer Processing

Extensional Rheology in Polymer Processing Extensional flows dominate many polymer processes, including blow molding, film blowing, fiber spinning, thermoforming and many others. The rheology of polymeric materials under extensional flows can differ significantly from shear flows and it is important to understand this in order to optimize both materials and processes. In this webinar, we…

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Gareth H. McKinley – Rheological Fingerprinting of Complex Fluids

OVERVIEW Large amplitude oscillatory shear (LAOS) is used increasingly as a tool to measure the nonlinear viscoelastic responses of soft solids and complex fluids. For many material systems the common practice of reporting only “viscoelastic moduli” (typically corresponding to the first harmonic Fourier coefficients G’1(w), G”1(w)) is insufficient and/or misleading in describing the nonlinear phenomena.…

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Gerald Fuller – Interfacial Rheology

Gerald Fuller – Interfacial Rheology OVERVIEW Interfacial rheology dominates the behavior of many complex fluid systems. Whether the system is characterized by a fluid-fluid interface or fluid-air interface, these characteristics influence the behavior of biological systems, oil recovery, personal care products, food and more. Learn about the basic forces that drive interfacial dynamics and stability,…

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How to Expand Your High-Performance Rheometer Capabilities for Powder Characterisation

Summary Research rheometers present excellent platforms for the characterisation and quantification of powder flowability. Until recent years, powder characterisations have been restricted only to instruments dedicated to just that one class of materials. Now there is a growing recognition of the opportunities for extending the application of high-performance rheometers to the measurement of particulate solids.…

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Interfacial Rheology: Fundamental Overview and Applications

Interfacial Rheology: Fundamental Overview and Applications Overview Interfacial rheology dominates the behavior of many complex fluid systems. Whether the system is characterized by a fluid-fluid interface or fluid-air interface, these characteristics influence the behavior of biological systems, oil recovery, personal care products, food and more. Learn the basic forces that drive interfacial dynamics and…

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Jan Vermant – Orthogonal Superposition Rheology

Jan Vermant – Orthogonal Superposition Rheology OVERVIEW Superposition flows in rheology are powerful methods to understand non-linear and anisotropic viscoelasticity. Parallel Superposition experiments have been historically simple to perform, but are difficult to understand and do not provide all of the desired information. Recent developments have made Orthogonal Superposition more simple to perform, allowing…

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Melt Viscosity Measurements at High Temperatures

  Overview Maintaining the optimum viscosity of a molten material is key for efficiency and product quality of many industrial processes. Processing of melts at high temperatures is the basis for classical or additive manufacturing of many materials like glasses or metals. Molten slag or ash viscosity is essential for economically operating industrial gasification processes…

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Norman J. Wagner: An Introduction to Colloidal Suspension Rheology

Norman J. Wagner: An Introduction to Colloidal Suspension Rheology Colloidal suspensions are encountered across a broad range of natural phenomena and industrially relevant products and processes. From coatings and inks, to foods and pharmaceuticals, dispersions, sols, gels, and glasses of colloidal particles exhibit a rich rheological behavior. This webinar will present an introductory overview of…

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