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Cellulose Nanofibrils as Reinforcement in the Process Manufacture of Paper Handsheets

Journal of natural fibers, 2022-10, Vol.19 (14), p.7818-7833 [Peer Reviewed Journal]

2021 Taylor & Francis 2021 ;2021 Taylor & Francis ;ISSN: 1544-0478 ;EISSN: 1544-046X ;DOI: 10.1080/15440478.2021.1958415

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  • Title:
    Cellulose Nanofibrils as Reinforcement in the Process Manufacture of Paper Handsheets
  • Author: Costa, Lívia Ribeiro ; Silva, Luiz Eduardo ; Matos, Lays Camila ; Tonoli, Gustavo Henrique Denzin ; Hein, Paulo Ricardo Gherardi
  • Subjects: Additives ; Cationic polymerization ; Cellulose ; cellulose microfibrils (CMF) ; Composite fibers ; Eucalyptus ; Fibers ; kraft paper ; Mechanical properties ; nanocellulose ; Papermaking ; Polymers ; Surface charge ; 力学性能 ; 复合纤维 ; 牛皮纸 ; 纤维素微纤维(CMF) ; 纳米纤维素
  • Is Part Of: Journal of natural fibers, 2022-10, Vol.19 (14), p.7818-7833
  • Description: The objective of this study was to better understand the effect of micro/nanofibrils added as reinforcement on paper handsheets, their physical-mechanical performance and barrier properties, and to determine the ideal cellulose nanofibrils (CNF) proportion to increase such paper properties. Mechanically produced CNF were added at increasing amounts (0%, 2%, 5%, 8% and 10%) to commercial Eucalyptus pulp to produce paper handsheet samples. Morphology, crystallinity, physical-mechanical and air barrier properties of the paper handsheets were evaluated. The results suggested that adding CNF has decreased the presence of empty spaces inside and on the surface of the paper handsheets by up to 61% due to the interaction between fibers and nanofibrils. The paper handsheets became denser, more compact and resistant to passage of air, as well as with greater mechanical performance with higher CNF content (10%). The bursting index is approximately 5 times higher on paper with addition of 10% of CNF compared to control paper handsheets. There were significant gains in the studied properties without any change in CNF/fibers surface charge or the use of any cationic polymer to assist the retention of nanofibrils and fibers. This study highlights the potential of CNF as additives in papermaking process, increasing its properties.
  • Publisher: Abingdon: Taylor & Francis
  • Language: English
  • Identifier: ISSN: 1544-0478
    EISSN: 1544-046X
    DOI: 10.1080/15440478.2021.1958415
  • Source: DOAJ Directory of Open Access Journals
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