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. 2016 Jul 28;6:30695. doi: 10.1038/srep30695

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Copyright © 2016, The Author(s)

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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(a) Representative stress-strain curves for CNF 2% and TOCNF 2% filaments in dry condition and after soaking in water for two hours. The drastic reduction in strength illustrates the deleterious effect of water. As a reference, tensile strength and elongation for viscose fibre (coarseness 0.17 g/km, diameter approx. 6 μm) are included¹⁸. The inset shows the profiles in wet state using reduced plot scales. (b) Water sorption analysis for CNF 2% filament. The profile added as a guide to the eye and identified with the square symbols refers to the development of the equilibrium moisture content (EMC) at RH 95%.