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. 2020 Jan 31;13(3):627. doi: 10.3390/ma13030627

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(a) Variation of the storage modulus (G´) as a function of the frequency for PUU PSAs made with different amino-alcohol chain extenders. Plate–plate rheology. Frequency sweep. T_ref = 25 °C. (b) Plots of the storage (G´) and loss (G´´) moduli as a function of the frequency for PUU PSAs made with different amino-alcohol chain extenders. Frequency sweep plate–plate rheology experiments. (b) PUU-1OH PSA; (c) PUU-2OH PSA; (d) PUU-3OH PSA.

(a) Variation of the storage modulus (G´) as a function of the frequency for PUU PSAs made with different amino-alcohol chain extenders. Plate–plate rheology. Frequency sweep. T_ref = 25 °C. (b) Plots of the storage (G´) and loss (G´´) moduli as a function of the frequency for PUU PSAs made with different amino-alcohol chain extenders. Frequency sweep plate–plate rheology experiments. (b) PUU-1OH PSA; (c) PUU-2OH PSA; (d) PUU-3OH PSA.