Rheology and Extrusion Expertise

Polymer process and analysis webinar series

Explore this free series of 4 webinars on process and analytical topics for polymers with a focus on rheology and extrusion. Click on the topics below to learn more.

Industry experts and our scientific specialist provide valuable technological information and real-word knowhow for various application topics. Watch 1, 2...up to all 4 webinars – it's your choice. Register just once for the entire series by completing the form below. Note that each webinar in the series will be available on-demand after it airs, so sign up anytime for this valuable information.

Improved mixing, blending, and compounding in TSE

Twin-screw extrusion (TSE) is a well-known process for compounding in the polymer, food and pharmaceutical industries. In fact, it’s the technique of choice for applications that require distributive and dispersive mixing. Due to modular screw design, the amount of shear energy in the process can be controlled with TSE. Beyond that, residence time can be adapted.  Even so, the mixing efficiency of TSE still depends on the type of flow during mixing. 

This webinar explains why an extensional flow is more efficient than the usual shear flow in twin-screw extrusion, especially in dispersive mixing. Dr. João M. Maia, Professor at Case Western Reserve University, presents newly developed extensional mixing elements (EMEs) which help generate that extensional flow

Learn how to improve your results in twin-screw extrusion; watch the webinar.

Speaker:  Dr. João M. Maia, Prof. at Case Western Reserve University, Dept. Macromolecular Science and Engineering. Director, CAPP - Center of Advanced Polymer Processing

Date: October 23, 2018
Time: 10:00 am Eastern
Duration: 60 minutes

Rheo-kinetic study of TPU

Simultaneous rheological and spectroscopic measurements provide an analytical tool that can be particularly helpful for product development for new polymeric materials such as novel thermoplastic polyurethanes (TPUs). With this combination, the changes in the rheological properties can be directly correlated with information about the molecular structure (FTIR).

TPUs are frequently used for sealants and adhesives, dampers, automotive parts, building and household products, in highly abrasive applications such as rollerblade wheels, and even in medical applications. They are multi-block copolymers typically produced using reactive extrusion.

Final product properties depend heavily on the composition of the TPU and the conditions under which it was processed. That’s how TPU is customized for specific applications. Yet during production, the extruder behaves like a “black box”; the ability to understand the reaction kinetics and changes in rheological properties is very limited.

This webinar covers how the interplay between composition and process can be investigated by using simultaneous rheometry and FTIR spectroscopy. This method allows changes of the rheological properties to be correlated with the evolution of the chemical structure and allows the effect of shear on the overall reaction kinetics to be investigated.

Watch the webinar to learn how to make better quality products with rheo-FTIR analysis.

Speaker:  Dr. João M. Maia, Prof. at Case Western Reserve University, Dept. of Macromolecular Science and Engineering. Director, CAPP - Center of Advanced Polymer Processing


Date: 
November 6, 2018
Time: 10:00 am Eastern
Duration: 40 minutes

Alloy feedstock

Metal injection molding (MIM) is a highly efficient state-of-the-art manufacturing process used in automotive, biomedical, jewelry, and many other industries. From stainless steel to super alloy and more, this process can reach high throughputs and deliver complex components with a homogeneous metallurgy structure.

This 2-part webinar investigates the development of biodegradable and bio-sourced formulation for innovative applications of the MIM process with fine Inconel powders. The result can be an eco-friendly process when based on biodegradable or bio-sourced materials.

Watch both parts of this webinar to get the full story:

Part 1: Study and characterization of PEG degradation in a super alloy feedstock
Following powder analysis and rheological behavior, analytical studies based on PEG, PLA and PHA binders will be discussed. The presentation will include an innovative simultaneous analysis of elaborated feedstock by infrared spectrometry and rheometry to simultaneously understand properties at macroscopic and molecular levels.

Part 2: New metal injection-molding high-loaded polymer made with bio-sourced polymers and innovative debinding process
A complete state-of-the-art process will be shown, starting with the analytical elaboration and characterization of high-loaded feedstocks with batch mixers. The feedstocks are then processed by MIM, debinded by conventional water process and by supercritical CO2 as a solvent. The optimization of supercritical debinding and heat treatment will be discussed as it enables better mechanical properties and leads to fewer defects.

Speaker: Thierry Barrière, Professor, Université de Franche-Comté, Besançon, FEMTO-ST Institute. The Applied Mechanical Department at this university is renowned for its MIM process expertise. The webinar recordings are based on the PhD thesis of Dr. A. Royer and related publications from 2015 to 2018.

Date: November 27, 2018
Time: 10:00 am Eastern

Drying polymer dispersions and paint films

Waterborne paints have become increasingly popular in recent years, so even more are being developed to satisfy market demand. In the development of such paints, it’s essential to understand the quantitative differentiation in the drying behavior of these aqueous paints. Additionally, manufacturers want to optimize paint properties, especially key properties like open time – the amount of time after applying paint when corrections can be made without leaving visible traces.

Challenges remain in the quest to prolong open time. Manufacturers seek to identify which additives are up to the challenge while remaining safe and economical. Objective, reproducible methods for testing additives are still lacking. 

Clariant, a world leading specialty chemical company, teamed up with Thermo Fisher Scientific to fill the void in adequate testing. Together, we developed a simple rheological method based on a novel measuring system attached to a highly precise air-bearing rheometer. The result is a reliable method to characterize the drying behavior of polymer dispersions and to investigate the effect of different additives on the drying process of polymer dispersions.

Watch this webinar to learn more about how you can easily test various formulations to optimize drying behavior of aqueous paints.

Note: the results discussed in this Webinar are based on cooperative work between Clariant Produkte GmbH (Dr. Jesus Pitarch Lopez and Joerg Rueger) and Thermo Fisher Scientific, Karlsruhe (Dr. Cornelia Kuechenmeister and Dr. Klaus Oldoerp).

Speaker: Dr. Klaus Oldoerp, Thermo Fisher Scientific


Date: 
February 13, 2019
Time: 10:00 am Eastern
Duration: 30 minutes


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