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Nanopaper Properties and Adhesive Performance of Microfibrillated Cellulose from Different (Ligno-)Cellulosic Raw Materials

Polymers, 2017-07, Vol.9 (8), p.326 [Peer Reviewed Journal]

Copyright MDPI AG 2017 ;2017 by the authors. 2017 ;ISSN: 2073-4360 ;EISSN: 2073-4360 ;DOI: 10.3390/polym9080326 ;PMID: 30971001

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  • Title:
    Nanopaper Properties and Adhesive Performance of Microfibrillated Cellulose from Different (Ligno-)Cellulosic Raw Materials
  • Author: Pinkl, Stefan ; Veigel, Stefan ; Colson, Jérôme ; Gindl-Altmutter, Wolfgang
  • Subjects: Adhesion tests ; Adhesive bonding ; Adhesive strength ; Adhesives ; Atomic force microscopy ; bio-adhesive ; Bleaching ; Bond strength ; Bonding strength ; Cellulose ; Cellulose fibers ; Fibrillation ; Materials selection ; Mechanical properties ; nanocellulose ; nanopaper ; Oxidation ; Performance evaluation ; Pretreatment ; Raw materials ; sugar beet ; Sugar industry ; wood
  • Is Part Of: Polymers, 2017-07, Vol.9 (8), p.326
  • Description: The self-adhesive potential of nanocellulose from aqueous cellulosic suspensions is of interest with regard to a potential replacement of synthetic adhesives. In order to evaluate the performance of microfibrillated cellulose from different (ligno-)cellulosic raw materials for this purpose, softwood and hardwood powder were fibrillated and compared to sugar beet pulp as a representative non-wood cellulose resource, and conventional microfibrillated cellulose produced from bleached pulp. An alkali pre-treatment of woody and sugar beet raw materials enhanced the degree of fibrillation achieved, same as TEMPO-mediated oxidation of microfibrillated cellulose. Nanopapers produced from fibrillated material showed highly variable density and mechanical performance, demonstrating that properties may be tuned by the choice of raw material. While nanopaper strength was highest for TEMPO-oxidated microfibrillated cellulose, fibrillated untreated sugar beet pulp showed the best adhesive performance. Different microscopic methods (AFM, SEM, light microscopy) examined the interface between wood and fibrillated material, showing particular distinctions to commercial adhesives. It is proposed that fibrillated material suspensions, which achieve bond strength up to 60% of commercial urea-formaldehyde adhesive, may provide a viable solution to bio-based adhesives in certain applications where wet-strength is not an issue.
  • Publisher: Switzerland: MDPI AG
  • Language: English
  • Identifier: ISSN: 2073-4360
    EISSN: 2073-4360
    DOI: 10.3390/polym9080326
    PMID: 30971001
  • Source: Open Access: DOAJ Directory of Open Access Journals
    Geneva Foundation Free Medical Journals at publisher websites
    AUTh Library subscriptions: ProQuest Central
    PubMed Central
    ROAD: Directory of Open Access Scholarly Resources
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