25.05.2022 14:0015:00

An Introduction to the Rheology of Gelling Systems

02:00 - 03:00 PM BST
03:00 - 04:00 PM CET

This webinar will cover in brief the rheological characteristics of a material undergoing the transition from liquid to solid. Starting at the principle of viscoelasticity, this webinar will outline the mechanical properties of a viscoelastic liquid, a viscoelastic solid, and measurement of the ‘gel point’ in between. What can we learn from the transition, and measuring the transiency itself – and what techniques are being developed that can rapidly assess the mechanical structure of a transient material.

Our Special Guest: Dr Alex Holder
Dr Alex Holder read Chemical Engineering at Swansea University and joined the Welsh Centre of Printing and Coating after completing his PhD in Nanotechnology. As a PhD student, he worked on validating advanced rheometric techniques such as Optimal Fourier Rheometry (OFR) and controlled StressStress is defined as a level of force applied on a sample with a well-defined cross section. (Stress = force/area). Samples having a circular or rectangular cross section can be compressed or stretched. Elastic materials like rubber can be stretched up to 5 to 10 times their original length.stress parallel superposition (CSPS) while working closely with industrial partners on how these techniques might provide better data for their flow modelling. During his time at the WCPC, Alex was involved in the development of printed pressure sensors as well as developing advanced rheometric techniques to investigate fluid properties specifically of interest to printing. After a collaborative research project with the Complex Fluids Research Group at Swansea University Alex has returned to the WCPC and seeks to utilise advanced rheometric techniques to further understanding in the field of printed electronics as well as other complex biological and industrial rheological systems.

Host: Dr. Shona Marsh
PhD - Polymer Science | Application & Product Marketing Manager Rheology
NETZSCH-Gerätebau GmbH

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