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Comprehensive analysis of individual pulp fiber bonds quantifies the mechanisms of fiber bonding in paper

Scientific reports, 2015-05, Vol.5 (1), p.10503-10503, Article 10503 [Peer Reviewed Journal]

Copyright Nature Publishing Group May 2015 ;Copyright © 2015, Macmillan Publishers Limited 2015 Macmillan Publishers Limited ;ISSN: 2045-2322 ;EISSN: 2045-2322 ;DOI: 10.1038/srep10503 ;PMID: 26000898

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  • Title:
    Comprehensive analysis of individual pulp fiber bonds quantifies the mechanisms of fiber bonding in paper
  • Author: Hirn, Ulrich ; Schennach, Robert
  • Subjects: Atomic force microscopy ; Cellulose ; Chemical bonds ; Crystal structure ; Energy ; Fibers ; Hydrogen bonding ; Pulp ; Pulp & paper industry
  • Is Part Of: Scientific reports, 2015-05, Vol.5 (1), p.10503-10503, Article 10503
  • Description: The process of papermaking requires substantial amounts of energy and wood consumption, which contributes to larger environmental costs. In order to optimize the production of papermaking to suit its many applications in material science and engineering, a quantitative understanding of bonding forces between the individual pulp fibers is of importance. Here we show the first approach to quantify the bonding energies contributed by the individual bonding mechanisms. We calculated the impact of the following mechanisms necessary for paper formation: mechanical interlocking, interdiffusion, capillary bridges, hydrogen bonding, Van der Waals forces, and Coulomb forces on the bonding energy. Experimental results quantify the area in molecular contact necessary for bonding. Atomic force microscopy experiments derive the impact of mechanical interlocking. Capillary bridges also contribute to the bond. A model based on the crystal structure of cellulose leads to values for the chemical bonds. In contrast to general believe which favors hydrogen bonding Van der Waals bonds play the most important role according to our model. Comparison with experimentally derived bond energies support the presented model. This study characterizes bond formation between pulp fibers leading to insight that could be potentially used to optimize the papermaking process, while reducing energy and wood consumption.
  • Publisher: England: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 2045-2322
    EISSN: 2045-2322
    DOI: 10.1038/srep10503
    PMID: 26000898
  • Source: PubMed Central
    ProQuest Central
    DOAJ Directory of Open Access Journals
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