Dresden 2020 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 56: Poster: Glasses; Granular Matter; Brownian Motion and Anomalous Diffusion

DY 56.14: Poster

Donnerstag, 19. März 2020, 15:00–18:00, P1A

Polybutadiene confined in alumina pore — •Lama Tannoury and Wolfgang Paul — Martin Luther Universität

Several studies concerning 1,4-polyutadiene (PBD) confined between graphite walls have been performed perviously. They have shown that the polymer melts experience, at close distances to the confining walls, a variation in both monomer and chain density. Furthermore, that layer also experiences a change in dynamics incorporated in the slowing down of and an extra process of relaxation. These studies are essential to the comprehension of composite materials made of polymer matrices and inorganic filler particles such as rubber tires. The latter is a composite material filled with nanoparticles. However, since previous research on PBD melts permeated by nano-sized fillers could not reach relaxation time scales accessible by MD simulations, we attempt to study a chemically realistic model of a PBD melt inside alumina and silica pores using the GROMACS package. We aim to enhance our view concerning bulk relaxation processes and any modifications they experience due to confinement.