Author
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Barone, Justin |
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Submitted to: Chemical Engineering Science
Publication Type: Peer Reviewed Journal Publication Acceptance Date: 11/21/2004 Publication Date: 5/1/2005 Citation: Barone, J.R. 2005. Evaluation of polymer rheology from drop spreading experiments. Chemical Engineering Science. 60(1):2579-2584. Interpretive Summary: The paper describes the kinetics of spreading of large, high viscosity fluid drops. This simple type of experiment can be used to assess how well a large, high viscosity fluid would cover a surface while flowing under the force of gravity. Furthermore, basic rheological information such as zero-shear viscosity can be calculated from the spreading experiments without the use of complicated rheological equipment. Technical Abstract: In this paper, spreading experiments on "heavy" polymer drops are performed. "Heavy" refers to large polymer drops, i.e., the radius of the drop, R, is much larger than the capillary length, k^-1, so that the spreading is dictated by gravity. The zero-shear viscosity can be found from measurements of the time-dependent drop radius or vice versa. Viscosity values found from spreading experiments compare well with the viscosity values found from dynamic rheological experiments. |
