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Introducing Students to Rheological Classification of Foods, Cosmetics, and Pharmaceutical Excipients Using Common Viscous Materials
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    Introducing Students to Rheological Classification of Foods, Cosmetics, and Pharmaceutical Excipients Using Common Viscous Materials
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    Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Avenida Professor Gama Pinto, 1649-003 Lisboa, Portugal
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    Journal of Chemical Education

    Cite this: J. Chem. Educ. 2015, 92, 5, 936–939
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    https://doi.org/10.1021/ed4008364
    Published January 23, 2015
    Copyright © 2015 The American Chemical Society and Division of Chemical Education, Inc.

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    Rheological measurements are very important tools for the characterization of the flow and deformation of a material, as well as for optimization of the rheological parameters. The application and acceptance of pharmaceutical formulations, cosmetics, and foodstuffs depends upon their rheological characteristics, such as texture, consistency, or viscosity, which also influences their stability and bioavailability. This article describes a simple 2 h laboratory procedure for the rheological characterization of some foods, cosmetics, and pharmaceutical excipients using a digital Brookfield viscometer. The experiment was designed to introduce basic rheological concepts to undergraduate Health Science students, such as Pharmacy and Biochemistry students, allowing them to perform viscosity measurements of ideal and nonideal fluids and to classify the flow behavior based on the experimental flow curves of common viscous materials.

    Copyright © 2015 The American Chemical Society and Division of Chemical Education, Inc.

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    Journal of Chemical Education

    Cite this: J. Chem. Educ. 2015, 92, 5, 936–939
    Click to copy citationCitation copied!
    https://doi.org/10.1021/ed4008364
    Published January 23, 2015
    Copyright © 2015 The American Chemical Society and Division of Chemical Education, Inc.

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