Garrett, Brendan orcid.org/0000-0002-5143-8702, Matharu, Avtar S. orcid.org/0000-0002-9488-565X and Hurst, Glenn A. (2017) Using Greener Gels To Explore Rheology. JOURNAL OF CHEMICAL EDUCATION. pp. 500-504. ISSN 0021-9584
Abstract
A laboratory experiment was developed to investigate the rheological properties of a green calcium-cross-linked alginate gel as an alternative to the traditional borax-cross-linked poly(vinyl alcohol) gel. As borax is suspected of damaging fertility and the unborn child, a safe, green alternative is necessary. The rheological properties of a sodium alginate solution were examined as a function of temperature using capillary viscometry. Gelation and degelation processes were followed using rotational viscometry. The non-Newtonian shear-thinning properties were also exemplified by determining the viscosity as a function of spindle speed using the rotational viscometer. Students making the transition from a first- to second-year undergraduate chemistry program within a natural sciences degree have successfully conducted this laboratory experiment.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 The American Chemical Society and Division of Chemical Education, Inc. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details. |
Keywords: | Colloids,Green Chemistry,Hands-On Learning/Manipulatives,Materials Science,Physical Properties,Polymer Chemistry,Second-Year Undergraduate |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) |
Depositing User: | Pure (York) |
Date Deposited: | 30 Jan 2017 16:30 |
Last Modified: | 15 Mar 2025 00:06 |
Published Version: | https://doi.org/10.1021/acs.jchemed.6b00584 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1021/acs.jchemed.6b00584 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:111420 |
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