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Relaxation time of dilute polymer solutions: A microfluidic approach
https://oist.repo.nii.ac.jp/records/212
https://oist.repo.nii.ac.jp/records/212ef95c4cf-b740-4b6b-bd0f-480fa5eee461
名前 / ファイル | ライセンス | アクション |
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1.4975933 (2.6 MB)
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Creative Commons Attribution 4.0 International
(http://creativecommons.org/licenses/by/4.0/) |
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2018-01-11 | |||||
タイトル | ||||||
タイトル | Relaxation time of dilute polymer solutions: A microfluidic approach | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Relaxation time of dilute polymer solutions: A microfluidic approach | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者(英) |
Del Giudice, Francesco
× Del Giudice, Francesco× Haward, Simon. J.× Shen, Amy. Q. |
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書誌情報 |
en : Journal of Rheology 巻 61, 号 2, p. 327-337, 発行日 2017-02-15 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Polymer solutions are considered dilute when polymer chains in a solution do not interact with each other. One important step in the characterization of these systems is the measurement of their longest relaxation times λ. For dilute polymer solutions in low-viscous solvents, this measurement can be very challenging through conventional techniques. Recently, several microfluidic platforms have been successfully employed to measure the rheological properties of weakly viscoelastic solutions. Nevertheless, a comparison between data generated from different microfluidic platforms has not yet been presented. In this work, we measure λ of dilute polymer solutions for concentrations down to a few parts per million, by using two distinct microfluidic platforms with shear and extensional flow configurations. We consider three representative polymer classes: Neutral polymers in near-theta and good solvents, and a biological polyelectrolyte in a good solvent in the presence of salt. Relaxation times in shear flow λshear are measured through the μ-rheometer based on the viscoelastic alignment of particles in a straight microchannel. Relaxation times in extensional flow λext are measured in a microfluidic optimized cross-slot configuration based on the onset of the flow-induced birefringence. A good agreement between experimental measurements from the two platforms is found. Experimental measures are also compared with available theories. | |||||
出版者 | ||||||
出版者 | The Society of Rheology | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0148-6055 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1520-8516 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1122/1.4975933 | |||||
権利 | ||||||
権利情報 | © 2017 The Society of Rheology, Inc. | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://sor.scitation.org/doi/10.1122/1.4975933 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |