Nonmonotonic dependence of comb polymer relaxation on branch density in semidilute solutions of linear polymers
| Autor: | Charles E. Sing, Charles D. Young, Shivani F. Patel, Charles M. Schroeder |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Fluid Flow and Transfer Processes
chemistry.chemical_classification Materials science Linear polymer Computational Mechanics Polymer architecture 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology Branching (polymer chemistry) 01 natural sciences 0104 chemical sciences Condensed Matter::Soft Condensed Matter chemistry Chemical physics Modeling and Simulation Excluded volume Brownian dynamics 0210 nano-technology |
| Zdroj: | Physical Review Fluids. 5 |
| ISSN: | 2469-990X |
| DOI: | 10.1103/physrevfluids.5.121301 |
| Popis: | The relaxation of comb polymers in semidilute solutions is studied using single-molecule fluorescence microscopy and Brownian dynamics simulations with long-range hydrodynamic interactions (HI). Unexpectedly, comb polymer relaxation is found to depend nonmonotonically on branching density, such that lightly branched chains relax faster than linear chains in semidilute solutions. These results challenge commonly held notions in the field and show that the dynamics of branched polymers in nondilute solutions is governed by a coupling between polymer architecture, long-range HI, and excluded volume interactions. |
| Databáze: | OpenAIRE |
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