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…
Designing New Materials for Additive Manufacturing: Vat Photopolymerization Overview 3D printing, or additive manufacturing (AM), provides opportunities to create previously unattainable geometric objects through layer-by-layer fabrication. Novel macromolecular structures and synthetic methods coupled with unique printing methods lead to 3D part generation with micron-scale resolution and tunable to emerging technologies. By tuning polymer structure, printing…
Strategies for Rheological Evaluation of Adhesives Overview Adhesives are widely used in industries and by consumers. A quantitative understanding of the physical performance of such materials, such as adhesiveness, cohesiveness, tack, and peel performance, are important for quality control and for guiding formulators. Rheology is a powerful tool that provides direct measurement of a material’s…
An Introduction To High Pressure Rheology High pressure rheology explores phenomena that are not accessible at ambient laboratory conditions. Three of the advantages of using a pressure rheometer cell include a controlled environment for volatile fluids, saturating fluids with soluble constituents, and exploring new phase space using a combination of temperature and pressure.
Randy H. Ewoldt: Experimental Challenges of Shear Rheology, How to Avoid Bad Data How do you know when to trust your rheology data? How do you avoid bad data? Is there a checklist? Can you co-plot quantitative experimental boundaries against measured data? This presentation will discuss techniques for identifying and minimizing experimental errors and for…
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…
De nombreux procédés de traitement de polymères sont dominés par des fluages de traction, notamment le moulage par soufflage, le soufflage de feuille mince, le filage de fibres, le thermoformage et bien d’autres. La rhéologie des matériaux polymères soumis à des fluages de traction peut différer sensiblement de celle des fluages de cisaillement, et il…
La tribologie est complémentaire à la rhéologie et fournit des informations sur les interactions solide-solide qui permettent d’en savoir plus sur les mesures fluides en vrac de la rhéologie. Elle s’intéresse en particulier à la quantification du coefficient de friction comme une fonction de la vitesse de glissement et de la force de charge, en…
L’association de la microscopie optique et des essais rhéologiques permet d’observer directement la structure des matériaux soumis à des déformations de cisaillement. Cela fournit des informations essentielles qui peuvent permettre de comprendre, prévoir et ajuster la réponse des matériaux en conditions de traitement, de stockage ou d’utilisation finale.
