Overview Polymeric materials, both thermoplastics and thermosets, have long been studied by differential scanning calorimetry (DSC). Cure properties, crystallization behavior, and glass transition temperatures are just a few of the material characteristics investigated by this versatile thermal technique. In many instances, the comparison of these material properties from samples that have a different production…
Overview The viscoelastic properties of polymers play a critical role in the different stages of polymer processing operations, whether it is melting and extrusion or the performance of the final product. On most polymer data sheets, these properties are presented in the form of a melt flow index. However, this simplistic approach is inherently…
Overview Thermogravimetric Analysis, or TGA, is a powerful analytical tool for measuring changes in a sample’s mass as its environmental temperature shifts. When coupled with other instrumental techniques such as mass spectrometers and infrared spectrometers, chemical analysis of the evolved gases is achieved. These hyphenated techniques have a long history in thermal analysis.…
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…
Chris Yakacki: Characterization of Active Shape-Memory Polymers The field of stimuli-sensitive polymers has grown rapidly over the past decade. Actively-moving polymers have gained attention and have been proposed for use in applications from shape-changing biomedical devices to morphing structures. This webinar covers the basics of characterizing shape-memory polymers using thermo-mechanical equipment, such as the Q800 and…
Troy Nickel: An Introduction to Fatigue Testing Material or structural failures are typically the result of two types of loading modes: a single (static) load that results in failure or a repeated (cyclic) load that causes the material or structure to fatigue over time. When designing materials or structures it is important to understand which…
Professor Chris Macosko – Analyzing Molecular Weight Distribution w/ Rheology In this TA Instruments Webinar, Professor Chris Macosko discusses analyzing molecular weight distribution and blend morphology using rheology. Rheology is a powerful tool for analyzing polymer blends. This seminar will begin with the simplest case: molten blends of two different molecular weight homopolymers.We will…