Influence of the Hemicellulose Content on the Fiber Properties, Strength, and Formability of Handsheets

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    Hemicelluloses contribute to many intrinsic fiber properties, such as the swelling, fibrillation, bonding ability, and hornification tendency. During hornification, additional cross-linking between cellulose fibrils leads to a reduction in the swelling and water-holding capacity of pulp. The specific surface area, fibrillation, and flexibility of fibers also tend to decrease. To improve the plasticity of fibers and formability of the resulting paper, effective ways to control the fiber properties and their interactions in paper are highly desirable. This work investigated the role of xylan in the plasticization of bleached birch pulp fibers, as hemicelluloses act as natural spacers and thus reduce the interfibrillar cross-linking. Controlled removal of hemicellulose from fiber cell walls was performed using alkaline extraction and enzymes. The results confirmed that the xylan content noticeably influenced fiber shape and sheet properties, such as the tensile strength, strain at break, density, and 2D formability. A 60% reduction in xylose content reduced the tensile index by approximately 65% and strain at break by 50% compared to the original sample. The reductions were proportional to the amount of xylan removed and could be attributed mainly to the reduced interfibre bonding.
    LanguageEnglish
    Pages251- 263
    Number of pages13
    JournalBioResources
    Volume14
    Issue number1
    Publication statusPublished - 2019
    MoE publication typeNot Eligible

    Fingerprint

    Formability
    Fibers
    Xylans
    swelling
    Swelling
    Bleached pulp
    Xylose
    hemicellulose
    fibre
    tensile strength
    Cellulose
    Specific surface area
    Pulp
    Plasticity
    plasticity
    cellulose
    Tensile strength
    Enzymes
    surface area
    Cells

    Keywords

    • Cellulose
    • Fiber
    • Alkaline
    • Xylan
    • Xylanase
    • extraction
    • Hemicellulose

    OKM Publication Types

    • A1 Refereed journal article

    OKM Open Access Status

    • 1 Open Access

    ASJC Scopus subject areas

    • Materials Science(all)
    • Chemistry(all)

    Cite this

    @article{88dc25f46ce2414f9cb9f344fe9aafff,
    title = "Influence of the Hemicellulose Content on the Fiber Properties, Strength, and Formability of Handsheets",
    abstract = "Hemicelluloses contribute to many intrinsic fiber properties, such as the swelling, fibrillation, bonding ability, and hornification tendency. During hornification, additional cross-linking between cellulose fibrils leads to a reduction in the swelling and water-holding capacity of pulp. The specific surface area, fibrillation, and flexibility of fibers also tend to decrease. To improve the plasticity of fibers and formability of the resulting paper, effective ways to control the fiber properties and their interactions in paper are highly desirable. This work investigated the role of xylan in the plasticization of bleached birch pulp fibers, as hemicelluloses act as natural spacers and thus reduce the interfibrillar cross-linking. Controlled removal of hemicellulose from fiber cell walls was performed using alkaline extraction and enzymes. The results confirmed that the xylan content noticeably influenced fiber shape and sheet properties, such as the tensile strength, strain at break, density, and 2D formability. A 60{\%} reduction in xylose content reduced the tensile index by approximately 65{\%} and strain at break by 50{\%} compared to the original sample. The reductions were proportional to the amount of xylan removed and could be attributed mainly to the reduced interfibre bonding.",
    keywords = "Cellulose, Fiber, Alkaline, Xylan, Xylanase, extraction, Hemicellulose",
    author = "Jaakko Pere and Elina P{\"a}{\"a}kk{\"o}nen and Yun Ji and E Retulainen",
    year = "2019",
    language = "English",
    volume = "14",
    pages = "251-- 263",
    journal = "BioResources",
    issn = "1930-2126",
    publisher = "North Carolina State University",
    number = "1",

    }

    Influence of the Hemicellulose Content on the Fiber Properties, Strength, and Formability of Handsheets. / Pere, Jaakko; Pääkkönen, Elina; Ji, Yun; Retulainen, E.

    In: BioResources, Vol. 14, No. 1, 2019, p. 251- 263.

    Research output: Contribution to journalArticleResearchpeer-review

    TY - JOUR

    T1 - Influence of the Hemicellulose Content on the Fiber Properties, Strength, and Formability of Handsheets

    AU - Pere, Jaakko

    AU - Pääkkönen, Elina

    AU - Ji, Yun

    AU - Retulainen, E

    PY - 2019

    Y1 - 2019

    N2 - Hemicelluloses contribute to many intrinsic fiber properties, such as the swelling, fibrillation, bonding ability, and hornification tendency. During hornification, additional cross-linking between cellulose fibrils leads to a reduction in the swelling and water-holding capacity of pulp. The specific surface area, fibrillation, and flexibility of fibers also tend to decrease. To improve the plasticity of fibers and formability of the resulting paper, effective ways to control the fiber properties and their interactions in paper are highly desirable. This work investigated the role of xylan in the plasticization of bleached birch pulp fibers, as hemicelluloses act as natural spacers and thus reduce the interfibrillar cross-linking. Controlled removal of hemicellulose from fiber cell walls was performed using alkaline extraction and enzymes. The results confirmed that the xylan content noticeably influenced fiber shape and sheet properties, such as the tensile strength, strain at break, density, and 2D formability. A 60% reduction in xylose content reduced the tensile index by approximately 65% and strain at break by 50% compared to the original sample. The reductions were proportional to the amount of xylan removed and could be attributed mainly to the reduced interfibre bonding.

    AB - Hemicelluloses contribute to many intrinsic fiber properties, such as the swelling, fibrillation, bonding ability, and hornification tendency. During hornification, additional cross-linking between cellulose fibrils leads to a reduction in the swelling and water-holding capacity of pulp. The specific surface area, fibrillation, and flexibility of fibers also tend to decrease. To improve the plasticity of fibers and formability of the resulting paper, effective ways to control the fiber properties and their interactions in paper are highly desirable. This work investigated the role of xylan in the plasticization of bleached birch pulp fibers, as hemicelluloses act as natural spacers and thus reduce the interfibrillar cross-linking. Controlled removal of hemicellulose from fiber cell walls was performed using alkaline extraction and enzymes. The results confirmed that the xylan content noticeably influenced fiber shape and sheet properties, such as the tensile strength, strain at break, density, and 2D formability. A 60% reduction in xylose content reduced the tensile index by approximately 65% and strain at break by 50% compared to the original sample. The reductions were proportional to the amount of xylan removed and could be attributed mainly to the reduced interfibre bonding.

    KW - Cellulose

    KW - Fiber

    KW - Alkaline

    KW - Xylan

    KW - Xylanase

    KW - extraction

    KW - Hemicellulose

    M3 - Article

    VL - 14

    SP - 251

    EP - 263

    JO - BioResources

    T2 - BioResources

    JF - BioResources

    SN - 1930-2126

    IS - 1

    ER -