TY - GEN
T1 - Rheological characterization of polyethylene oxide (PEO)
T2 - ASME 2020 International Mechanical Engineering Congress and Exposition, IMECE 2020
AU - Ahmad, Hafiz
AU - Boutaous, Mhamed
AU - Xin, Shihe
AU - Pabiou, Hervé
AU - Siginer, Dennis A.
N1 - Publisher Copyright:
© 2020 ASME.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2020
Y1 - 2020
N2 - In this paper, the rheological characteristics of aqueous PEO (Polyethylene oxide) solution with very high molecular weight 4×106 g/mol is investigated. Shear flow measurements were carried out in steady and transient modes. The unique behavior of PEO is found to be heavily dependent on the input shear rate and the mechanism of data generation. Generally, PEO is found to be shear-thinning throughout the experiments, but at the start of the experiments at low shear rates, minimum input shear value also affects the shear-thinning behavior. In this study, we investigate the critical method of applying input shear to the samples in the lower shear rate regime. Surprisingly, different input methods yield different results. Viscosity curves obtained through shear flow experiments are found to be significantly dependent on the input method of shear rate. Experimental measurements were validated by Cross and Carreau-Yasuda models.
AB - In this paper, the rheological characteristics of aqueous PEO (Polyethylene oxide) solution with very high molecular weight 4×106 g/mol is investigated. Shear flow measurements were carried out in steady and transient modes. The unique behavior of PEO is found to be heavily dependent on the input shear rate and the mechanism of data generation. Generally, PEO is found to be shear-thinning throughout the experiments, but at the start of the experiments at low shear rates, minimum input shear value also affects the shear-thinning behavior. In this study, we investigate the critical method of applying input shear to the samples in the lower shear rate regime. Surprisingly, different input methods yield different results. Viscosity curves obtained through shear flow experiments are found to be significantly dependent on the input method of shear rate. Experimental measurements were validated by Cross and Carreau-Yasuda models.
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U2 - 10.1115/IMECE2020-23553
DO - 10.1115/IMECE2020-23553
M3 - Conference contribution
AN - SCOPUS:85101280226
VL - 10
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
BT - Fluids Engineering
PB - American Society of Mechanical Engineers(ASME)
Y2 - 16 November 2020 through 19 November 2020
ER -