• Open Access

Terminal Flow of Cluster-Forming Supramolecular Polymer Networks: Single-Chain Relaxation or Micelle Reorganization?

Anton Mordvinkin, Diana Döhler, Wolfgang H. Binder, Ralph H. Colby, and Kay Saalwächter
Phys. Rev. Lett. 125, 127801 – Published 17 September 2020
PDFHTMLExport Citation

Abstract

We correlate the terminal relaxation of supramolecular polymer networks, based on unentangled telechelic poly(isobutylene) linear chains forming micellar end-group clusters, with the microscopic chain dynamics as probed by proton NMR. For a series of samples with increasing molecular weight, we find a quantitative agreement between the terminal relaxation times and their activation energies provided by rheology and NMR. This finding corroborates the validity of the transient-network model and the special case of the sticky Rouse model, and dismisses more dedicated approaches treating the terminal relaxation in terms of micellar rearrangements. Also, we confirm previous results showing reduction of the activation energy of supramolecular dissociation with increasing molecular weight and explain this trend with an increasing elastic penalty, as corroborated by small angle x-ray scattering data.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 5 June 2020
  • Accepted 18 August 2020

DOI:https://doi.org/10.1103/PhysRevLett.125.127801

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

© 2020 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
  1. Physical Systems
Polymers & Soft Matter

Authors & Affiliations

Anton Mordvinkin1, Diana Döhler2, Wolfgang H. Binder2, Ralph H. Colby3, and Kay Saalwächter1,*

  • 1Institut für Physik–NMR, Martin-Luther-Universität Halle-Wittenberg, Betty-Heimann-Straße 7, 06120 Halle (Saale), Germany
  • 2Institut für Chemie–Makromolekulare Chemie, Martin-Luther-Universität Halle-Wittenberg, von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany
  • 3Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA

Article Text

Click to Expand

Supplemental Material

Click to Expand

References

Click to Expand
Issue

Vol. 125, Iss. 12 — 18 September 2020

Reuse & Permissions
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Reuse & Permissions

It is not necessary to obtain permission to reuse this article or its components as it is available under the terms of the Creative Commons Attribution 4.0 International license. This license permits unrestricted use, distribution, and reproduction in any medium, provided attribution to the author(s) and the published article's title, journal citation, and DOI are maintained. Please note that some figures may have been included with permission from other third parties. It is your responsibility to obtain the proper permission from the rights holder directly for these figures.

×

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×