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5D Entanglement in Star Polymer Dynamics
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics. Inst Laue Langevin, Large Scale Struct Grp, 71 Rue Martyrs, F-38000 Grenoble, France.ORCID iD: 0000-0001-7904-5639
2018 (English)In: ADVANCED THEORY AND SIMULATIONS, ISSN 2513-0390, Vol. 1, no 11, article id 1800078Article in journal (Refereed) Published
Abstract [en]

Star polymers are within the most topologically entangled macromolecules. For a star to move the current theory is that one arm must retract to the branch point. The probability of this event falls exponentially with molecular weight, and a quicker relaxation pathway eventually takes over. With a simulation over a hundred times faster than earlier studies, it is demonstrated that the mean square displacement scales with a power law 1/16 in time, instead of the previously assumed zero. It suggests that star polymer motion is the result of two linear relaxations coinciding in time. By analogy to linear polymers, which reptate with a random walk embedded in a 3D network, we show that star polymers relax by a random walk in a 5D network.

Place, publisher, year, edition, pages
2018. Vol. 1, no 11, article id 1800078
Keywords [en]
complex networks, emergence, polymers, reptation, simulation
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:uu:diva-372720DOI: 10.1002/adts.201800078ISI: 000452073100001OAI: oai:DiVA.org:uu-372720DiVA, id: diva2:1276592
Funder
Swedish Research Council, CTS 16:519Carl Tryggers foundation Available from: 2019-01-08 Created: 2019-01-08 Last updated: 2019-01-08Bibliographically approved

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Korolkovas, Airidas

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