Regensburg 2019 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 25: Poster Session II

CPP 25.26: Poster

Dienstag, 2. April 2019, 14:00–16:00, Poster B1

Suspensions of magnetic microgels — •Ivan Novikau1, Elena Minina1,2, and Sofia Kantorovich1,21University of Vienna — 2Ural Federal University

Microgels have gained a lot of attention due to their ability to swell and shrink as a response to their external environment [1]. The presence of magnetic particles inside the microgels offers an additional mechanism to control their properties by means of applied magnetic fields.

Study of a single microgel with magnetic particles showed that the magnetic susceptibility of these object strongly depends on the rigidity of the matrix and on the content of magnetic particles [2].

Here, is investigate a suspension of magnetic microgels by means of molecular dynamics computer simulations in order to elucidate possible microgel self-assembly scenarios. Each microgel is initially modeled as bead-spring polymer chains randomly cross-linked into a polymer network. Magnetic particles are randomly incorporated into this network.

Both dilute and relatively dense suspensions of microgels are considered with dipolar interactions in order to observe the self-assembly and figure out which factors are crucial for this process in the zero field case.

[1] A. Fernandez-Nieves, H. M. Wyss, J. Mattsson, and D. A. Weitz. Microgel Suspensions: Fundamentals and Applications. 2011.

[2] E.S. Minina, P.A. Sanchez, C.N. Likos and S.S. Kantorovich, JMMM 459, 226 (2018).

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