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arXiv · 2312.01374

Effects of linking topology on the shear response of connected ring polymers: Catenanes and bonded rings flow differently

Reyhaneh A. Farimani·Zahra Ahmadian Dehaghani·Christos N. Likos·Mohammad Reza Ejtehadi
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Abstract

We perform computer simulations of mechanically linked (poly[2]catenanes, PC) and chemically bonded (bonded rings, BR) pairs of self-avoiding ring polymers in steady shear. We find that BR's develop a novel motif, termed gradient tumbling, rotating around the gradient axis. For the PC's the rings are stretched and display another new pattern, termed slip-tumbling. The dynamics of BR's is continuous and oscillatory, whereas that of PC's is intermittent between slip-tumbling attempts. Our findings demonstrate the interplay between topology and hydrodynamics in dilute solutions of connected polymers.

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Reyhaneh A. Farimani, Zahra Ahmadian Dehaghani, Christos N. Likos, Mohammad Reza Ejtehadi. 2023-12-03. Effects of linking topology on the shear response of connected ring polymers: Catenanes and bonded rings flow differently. https://arxiv.org/abs/2312.01374

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