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- W2808076533 abstract "The rheological properties of polymer solution are sensitive to variations in the polymer structure. Carboxymethyl cellulose (CMC) aqueous solution has been used in many fields, such as food, medicine and paper industry. In this paper, the effects of different concentrations (2% - 6%) of CMC/Eu-Tb on their rheological properties were investigeted, including steady-state flow and viscoelastic response. The results show that, the viscosity of CMC/Eu-Tb is lower than that of CMC, at the same concentrations; the products solutions present a nearly Newtonian behavior at the low concentrations (2% - 3%); while at the higher concentrations (4% - 6%), the products solutions present a pseudoplastic behavior; shear-thinning behavior is due to the polymer chains unravel under the action of flow and the molecular chains are oriented in the flow direction. The results also show that the viscosity of the solutions decreases with increasing temperature. Dynamic rheological tests show that CMC/Eu-Tb has viscoelasticity in the concentrations of 2% - 6%. At lower concentrations, the elastic modulus G' is slightly higher than the viscous modulus G'', and as the concentrations increase, the elastic modulus G' is significantly higher than the viscous modulus G''. It means that at the lower solution concentrations, the solutions tend to be less elastic and easier to flow. Most of the energies are lost through the viscous flow. As the solution concentrations increase, the solutions tend to be more elastic, and the system tends to form a gel." @default.
- W2808076533 created "2018-06-21" @default.
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- W2808076533 date "2018-05-01" @default.
- W2808076533 modified "2023-10-18" @default.
- W2808076533 title "Study on rheological properties of CMC/Eu-Tb solutions with different concentrations" @default.
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- W2808076533 doi "https://doi.org/10.1088/1757-899x/369/1/012039" @default.
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