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Water vapor sorption properties of cellulose nanocrystals and nanofibers using dynamic vapor sorption apparatus

Scientific reports, 2017-10, Vol.7 (1), p.14207-12, Article 14207 [Peer Reviewed Journal]

2017. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;The Author(s) 2017 ;ISSN: 2045-2322 ;EISSN: 2045-2322 ;DOI: 10.1038/s41598-017-14664-7 ;PMID: 29079849

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  • Title:
    Water vapor sorption properties of cellulose nanocrystals and nanofibers using dynamic vapor sorption apparatus
  • Author: Guo, Xin ; Wu, Yiqiang ; Xie, Xinfeng
  • Subjects: Cellulose ; Crystals ; Data processing ; Nanocrystals ; Relative humidity ; Sorption ; Water vapor
  • Is Part Of: Scientific reports, 2017-10, Vol.7 (1), p.14207-12, Article 14207
  • Description: Hygroscopic behavior is an inherent characteristic of nanocellulose which strongly affects its applications. In this study, the water vapor sorption behavior of four nanocellulose samples, such as cellulose nanocrystals and nanofibers with cellulose I and II structures (cellulose nanocrystals (CNC) I, CNC II, cellulose nanofibers (CNF) I, and CNF II) were studied by dynamic vapor sorption. The highly reproducible data including the running time, real-time sample mass, target relative humidity (RH), actual RH, and isotherm temperature were recorded during the sorption process. In analyzing these data, significant differences in the total running time, equilibrium moisture content, sorption hysteresis and sorption kinetics between these four nanocellulose samples were confirmed. It was important to note that CNC I, CNC II, CNF I, and CNF II had equilibrium moisture contents of 21.4, 28.6, 33.2, and 38.9%, respectively, at a RH of 95%. Then, the sorption kinetics behavior was accurately described by using the parallel exponential kinetics (PEK) model. Furthermore, the Kelvin-Voigt model was introduced to interpret the PEK behavior and calculate the modulus of these four nanocellulose samples.
  • Publisher: England: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 2045-2322
    EISSN: 2045-2322
    DOI: 10.1038/s41598-017-14664-7
    PMID: 29079849
  • Source: PubMed Central
    ProQuest Central
    DOAJ Directory of Open Access Journals
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