Berlin 2018 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 38: Modeling and Simulation of Soft Matter II (joint session CPP/DY)
DY 38.1: Hauptvortrag
Mittwoch, 14. März 2018, 09:30–10:00, C 230
The favorite polymer libations — •Carlos M. Marques1, Debashish Mukherji2, and Kurt Kremer2 — 1Institut Charles Sadron, UdS-CNRS, Strasbourg, France — 2Max-Planck Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz Germany
Macromolecular solubility in solvent mixtures often strikes as a paradoxical phenomenon. In a system where all particle interactions are repulsive, chains can nevertheless collapse. And when attractive interactions settle in, they might collapse or swell the chain. We will review in this contribution how the puzzling behavior of polymers in aqueous alcohol solutions triggered a better understanding of the interplay between solvent composition and polymer conformation. And how the resulting view on polymer collapse and swelling takes us well beyond mean-field descriptions ... and alcohol.
[1] Mukherji, D., Marques, C. M., Kremer, K. (2014). Polymer collapse in miscible good solvents is a generic phenomenon driven by preferential adsorption. Nature communications, 5882, 5.
[2] Mukherji, D., Marques, C. M., Stuehn, T., Kremer, K. (2015). Co-non-solvency: Mean-field polymer theory does not describe polymer collapse transition in a mixture of two competing good solvents. The Journal of chemical physics, 142(11), 114903.
[3] Mukherji, D., Wagner, M., Watson, M. D., Winzen, S., de Oliveira, T. E., Marques, C. M., & Kremer, K. (2016). Relating side chain organization of PNIPAm with its conformation in aqueous methanol. Soft Matter, 12(38), 7995.
[4] Mukherji, D., Marques, C. M., Stuehn, T., Kremer, K. (2017). Depleted depletion drives polymer swelling in poor solvent mixtures. Nature communications, 1374, 8.
[5] Mukherji, D., Marques, C. M., Kremer, K. (2017). Collapse in two good solvents, swelling in two poor solvents: defying the laws of polymer solubility? Journal of condensed matter, 024002, 30.