Professor João Maia: The Role of Interfacial Elasticity on the Rheological Behavior of Polymer Blends

The Role of Interfacial Elasticity on the Rheological Behavior of Polymer Blends: João Maia, Ph.D. The Role of Interfacial Elasticity on the Rheological Behavior of Polymer Blends Polymer blends are commonly used to generate materials with a desired combination of performance properties and cost. Most polymer blends are compatibilized to promote stability of the otherwise immiscible…

Advanced Rheological Measurements Of Polymers & Rubber Compounds

Advanced Rheological Measurements Of Polymers & Rubber Compounds   With the ever increasing market demand for rubber products, those in compounding and manufacturing are tasked with the challenge of increasing output without sacrificing efficiencies. This naturally increases the requirements of processes such as mixing, extruding, and injection molding in the rubber industry. Many factors…

In Search of Calorimetric Answers to Events In Self Assemblies

In Search of Calorimetric Answers to Events In Self Assemblies In this TA Webinar, Professor Nand Kishore discusses how to best discover and interpret protein folding, ligand binding, aggregation and molecular partitioning in self assemblies. Isothermal titration (ITC) and differential scanning calorimetry (DSC) are powerful tools for thermodynamic characterization of protein folding intermediates, drug-protein…

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…

An Introduction to Tribo-Rheometry: Quantifying Friction

An Introduction to Tribo-Rheometry: Quantifying Friction Tribology complements rheology, providing information on solid-solid interactions that adds insight to the bulk fluid measurements of rheology. Tribology is especially concerned with quantifying the coefficient of friction as a function of sliding speed and load force, under dry or lubricated conditions. This provides useful information about lubrication, wear,…

Morphology Of Complex Nanoparticle Mixtures

Morphology Of Complex Nanoparticle Mixtures The performance of new materials and devices depend heavily on morphological considerations: degree of crystallinity, conformation of amorphous species, and relative organization of one species with respect to another, characteristics which can be determined by thermal analysis. These considerations are important for functional materials such as photovoltaics and MEMS devices,…

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…

An Introduction to Lifetime Testing by Thermogravimetry

An Introduction to Lifetime Testing by Thermogravimetry Lifetime testing by thermogravimetry (TGA) is a well-established, powerful technique for predicting the long-term aging characteristics of a material in a short experimental time. Multiple techniques and models are presented and compared for lifetime testing, including Modulated TGA™, and a survey of the current ASTM methods and the…