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Simultaneous measurement of rheological properties in a microfluidic rheometer
Physics of Fluids, Volume: 32, Issue: 5
Swansea University Author: Francesco Del Giudice
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DOI (Published version): 10.1063/5.0006060
Abstract
Microfluidic rheometry is considered to be a potential alternative to conventional rheometry for the rheological characterization of viscoelastic solutions having relatively low viscoelastic properties. None of the microfluidic platforms introduced so far, however, can be used for the measurements o...
Published in: | Physics of Fluids |
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ISSN: | 1070-6631 1089-7666 |
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AIP Publishing
2020
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URI: | https://cronfa.swan.ac.uk/Record/cronfa53946 |
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2020-10-19T12:33:30.0926192 v2 53946 2020-04-15 Simultaneous measurement of rheological properties in a microfluidic rheometer 742d483071479b44d7888e16166b1309 0000-0002-9414-6937 Francesco Del Giudice Francesco Del Giudice true false 2020-04-15 CHEG Microfluidic rheometry is considered to be a potential alternative to conventional rheometry for the rheological characterization of viscoelastic solutions having relatively low viscoelastic properties. None of the microfluidic platforms introduced so far, however, can be used for the measurements of multiple rheological properties in the same device. In this work, I present the first microfluidic platform, named the “μ-rheometer,” which allows for the simultaneous measurement of zero-shear viscosity η0 and longest shear relaxation time λ. This is achieved by transforming the original “flow rate controlled” platform presented by Del Giudice et al., “Rheometry-on-a-chip: Measuring the relaxation time of a viscoelastic liquid through particle migration in microchannel flows,” Lab Chip 15, 783–792 (2015) into a “pressure drop controlled” microfluidic device, by replacing a syringe pump with a pressure pump. The novel device has been tested by measuring both η0 and λ for a number of polyethylene oxide solutions in glycerol–water 25 wt. % and pure water, respectively. Its effectiveness has been corroborated by means of a direct comparison with a conventional rotational rheometer. Journal Article Physics of Fluids 32 5 AIP Publishing 1070-6631 1089-7666 1 5 2020 2020-05-01 10.1063/5.0006060 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University UKRI, EP/S036490/1 2020-10-19T12:33:30.0926192 2020-04-15T08:20:47.6186250 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Francesco Del Giudice 0000-0002-9414-6937 1 53946__17655__4a78969b9d044ea49411ffbb043591ab.pdf 53946.pdf 2020-07-07T07:52:40.4289434 Output 3563276 application/pdf Version of Record true Released under the terms of a Creative Commons Attribution License (CC-BY). true eng http://creativecommons.org/licenses/by/4.0/ |
title |
Simultaneous measurement of rheological properties in a microfluidic rheometer |
spellingShingle |
Simultaneous measurement of rheological properties in a microfluidic rheometer Francesco Del Giudice |
title_short |
Simultaneous measurement of rheological properties in a microfluidic rheometer |
title_full |
Simultaneous measurement of rheological properties in a microfluidic rheometer |
title_fullStr |
Simultaneous measurement of rheological properties in a microfluidic rheometer |
title_full_unstemmed |
Simultaneous measurement of rheological properties in a microfluidic rheometer |
title_sort |
Simultaneous measurement of rheological properties in a microfluidic rheometer |
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742d483071479b44d7888e16166b1309 |
author_id_fullname_str_mv |
742d483071479b44d7888e16166b1309_***_Francesco Del Giudice |
author |
Francesco Del Giudice |
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Francesco Del Giudice |
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Journal article |
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Physics of Fluids |
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32 |
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2020 |
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Swansea University |
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1070-6631 1089-7666 |
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10.1063/5.0006060 |
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AIP Publishing |
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Faculty of Science and Engineering |
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School of Engineering and Applied Sciences - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering |
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description |
Microfluidic rheometry is considered to be a potential alternative to conventional rheometry for the rheological characterization of viscoelastic solutions having relatively low viscoelastic properties. None of the microfluidic platforms introduced so far, however, can be used for the measurements of multiple rheological properties in the same device. In this work, I present the first microfluidic platform, named the “μ-rheometer,” which allows for the simultaneous measurement of zero-shear viscosity η0 and longest shear relaxation time λ. This is achieved by transforming the original “flow rate controlled” platform presented by Del Giudice et al., “Rheometry-on-a-chip: Measuring the relaxation time of a viscoelastic liquid through particle migration in microchannel flows,” Lab Chip 15, 783–792 (2015) into a “pressure drop controlled” microfluidic device, by replacing a syringe pump with a pressure pump. The novel device has been tested by measuring both η0 and λ for a number of polyethylene oxide solutions in glycerol–water 25 wt. % and pure water, respectively. Its effectiveness has been corroborated by means of a direct comparison with a conventional rotational rheometer. |
published_date |
2020-05-01T04:07:12Z |
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1763753519817424896 |
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11.016258 |