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Rheologica Acta
Published in: Rheologica Acta 11-12/2023

01-11-2023 | Original Contribution

Specific viscosity of polymer solutions with large thermal blobs

Authors: Ralph H. Colby, Aijie Han

Published in: Rheologica Acta | Issue 11-12/2023

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Abstract

Literature viscosity data are reviewed in both entangled solutions and semidilute unentangled solutions, with several examples of using de Gennes’ thermal blob to rationalize observations for flexible polymers dissolved in intermediate quality solvents. Some puzzling literature data in θ-solvents are also nicely understood with two-parameter scaling upon reanalysis (where the correlation length and the tube diameter concentration dependences differ). However, some literature data seem to not be understood with this simple scheme, suggesting that our understanding of neutral polymer solution viscosity is incomplete. Lastly, combinations of experiments are suggested to better examine the concept of the thermal blob.
previous article Obtaining test-independent values of the dynamic and static yield stresses for time-dependent materials

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Metadata
Title
Specific viscosity of polymer solutions with large thermal blobs
Authors
Ralph H. Colby
Aijie Han
Publication date
01-11-2023
Publisher
Springer Berlin Heidelberg
Published in
Rheologica Acta / Issue 11-12/2023
Print ISSN: 0035-4511
Electronic ISSN: 1435-1528
DOI
https://doi.org/10.1007/s00397-023-01419-7

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