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Comparative Study of Aerogels Obtained from Differently Prepared Nanocellulose Fibers

ChemSusChem, 2014-01, Vol.7 (1), p.154-161 [Peer Reviewed Journal]

Copyright © 2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim ;Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. ;Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim ;ISSN: 1864-5631 ;EISSN: 1864-564X ;DOI: 10.1002/cssc.201300950 ;PMID: 24420495

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  • Title:
    Comparative Study of Aerogels Obtained from Differently Prepared Nanocellulose Fibers
  • Author: Chen, Wenshuai ; Li, Qing ; Wang, Youcheng ; Yi, Xin ; Zeng, Jie ; Yu, Haipeng ; Liu, Yixing ; Li, Jian
  • Subjects: Absorption ; Adsorption ; aerogels ; biomass ; Cellulose - chemistry ; Coloring Agents - chemistry ; Cotton Fiber ; Insulation ; Microscopy, Electron, Scanning ; Microscopy, Electron, Transmission ; nanocellulose ; Nanofibers - chemistry ; Nanofibers - ultrastructure ; nanostructures ; Nanostructures - chemistry ; Nanostructures - ultrastructure ; self-aggregation ; Sound ; Thermal Conductivity ; Wood
  • Is Part Of: ChemSusChem, 2014-01, Vol.7 (1), p.154-161
  • Description: This article describes the fabrication of nanocellulose fibers (NCFs) with different morphologies and surface properties from biomass resources as well as their self‐aggregation into lightweight aerogels. By carefully modulating the nanofibrillation process, four types of NCFs could be readily fabricated, including long aggregated nanofiber bundles, long individualized nanofibers with surface C6‐carboxylate groups, short aggregated nanofibers, and short individualized nanofibers with surface sulfate groups. Free‐standing lightweight aerogels were obtained from the corresponding aqueous NCF suspensions through freeze‐drying. The structure of the aerogels could be controlled by manipulating the type of NCFs and the concentration of their suspensions. A possible mechanism for the self‐aggregation of NCFs into two‐ or three‐dimensional aerogel nanostructures was further proposed. Owing to web‐like structure, high porosity, and high surface reactivity, the NCF aerogels exhibited high mechanical flexibility and ductility, and excellent properties for water uptake, removal of dye pollutants, and the use as thermal insulation materials. The aerogels also displayed sound‐adsorption capability at high frequencies. Nanocellulose aerogel: Lightweight aerogels are obtained from the corresponding aqueous suspensions of four types of nanocellulose through freeze‐drying. The structure of the aerogels can be controlled by manipulating the type of nanocellulose and the concentration of their suspensions. The aerogels exhibit high mechanical flexibility and ductility and excellent properties in water uptake, organic dye absorption, thermal insulation, and sound‐absorption at high frequencies.
  • Publisher: Weinheim: WILEY-VCH Verlag
  • Language: English
  • Identifier: ISSN: 1864-5631
    EISSN: 1864-564X
    DOI: 10.1002/cssc.201300950
    PMID: 24420495
  • Source: MEDLINE
    Alma/SFX Local Collection
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