Regensburg 2019 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 35: Modeling and Simulation of Soft Matter I (joint session CPP/DY)

DY 35.6: Talk

Wednesday, April 3, 2019, 16:15–16:30, H18

Self-assembly of triblock terpolymers system using dissipative particle dynamic simulations — •Deepika Deepika and Arash Nikoubashman — Institute of Physics, Johannes Gutenberg University, Staudingerweg 7, 55128 Mainz, Germany

Self-assembly of triblock polymers into ordered structures has emerged as a promising technique for generating morphologies with nanometer range periodicity. The self-assembled structures dictated by the volume fraction of each block and interactions between them. In this work we are interested in the self-assembly behavior of polystyrene-polybutadiene-polymethyl-methacrylate (SBM) triblock copolymers in melt and in solution. The ternary phase diagram of SBM melt includes complex morphologies like spheres in lamellae cylinders in lamellae, cylinders in cylinder and many other. Equally intriguing is the solution phase behavior of SBM; recent experiments conducted by Groeschel et al. suggested ellipsoid aggregates of SBM in which layers of SBM are stacked in an ABCBA pattern. We conducted extensive DPD simulations to elucidate the effect of the process parameters, such as the volume fraction of each block and the Flory-Huggins interaction parameters, on the self-assembled structures. Our simulations give microscopic insights into the self-assembly behavior and provide useful design guidelines for fabricating structured nanoparticles in experiments.