Applied Mathematics Seminars: Modelling the rheology of long chain polymer melts
5 May 2017 14:00 in CM219
Rheology is the study of flowing complex materials that usually have a stress response governed by the presence of some microstructure within the material.
In my talk I will discuss the rheology of long chain polymers that entangle with themselves. I will show how coarse-grained models of these entangled polymer melts are necessary in order to characterise experimental measurements and hence deduce material microstructure. Furthermore, I will talk about a the work done on a recent impact funding award in collaboration with an adhesives company, Henkel. Henkel’s problem is one of formulation, whereby there are thousands of degrees of freedom to consider when making a particular adhesive. The company needs to be able to predict how a particular formulation of adhesive will flow in the process they use to stick two films together. We used the models of entangled polymers in combination with 2D finite element simulations to predict if a given material would successfully survive the industrial process, i.e., that flow instabilities would not be a significant feature of the flow.
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This seminar series is the continuation of the Numerical Analysis Seminar series that ran until August 2016. This change of name reflects the broader interests of the Applied Mathematics group (note that the Mathematical and Theoretical Particle Physics group also has a seminar series).