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  • Engineered invasive plant cellulose fbers as resources for papermaking [Elektronski vir]
    Kapun, Tea ...
    Seven fast-growing invasive plant species were harvested in Slovenia and tested for their valorisation potential in the pulp and paper industry with the aim of sustainable substitution of commercial ... cellulose fbres. Cellulose fber materials were isolated by fltration after solubilizing extractives, lignin and hemicellulose in a kraft pulping process. The chemical structure was thoroughly studied, as well as the optical, morphological and mechanical properties. All examined species (Ailanthus altissima, Fallopia bohemica, Fallopia japonica, Rhus typhina, Robinia pseudoacacia, Rudbeckia laciniata and Solidago canadensis) contain relatively high amount of C6 polysaccharides (>35%), have notable hemicellulose content (30–40%), low ash content (<2%) and can be easily delignifed, while manufactured natural fbers exhibit convenient morphology (fber length 0.47–0.88 mm; width 14.4–20.9 μm), optical (ISO whiteness 19.0–36.0%) and mechanical characteristics (tensile index 18.0–58.0 Nm/g; tear index 0.8–4.1 mN m2 /g; and burst index 0.5–2.4 kPa m2 /g indices), which makes them applicable to sustainable paper production. The pulp yields varied between 34–44%, where both darker herbaceous and brighter woody fbers were morphologically comparable to typical hardwoods. According to the observed properties Robinia pseudoacacia and Rudbeckia laciniata seem to be superior raw material for commercial papermaking products. The ubiquitous invasive plants pose a huge potential for the circular economy, especially in terms of their cascade valorisation of biorefnery by the isolation and valorization of hemicellulose, sugars, and lignins into added-value aromatic and aliphatic building blocks. However, promising yield of cellulose fbers of decent morphology and mechanical properties are reported in this study.
    Source: European journal of wood and wood products = Holz als Roh- und Werkstoff [Elektronski vir]. - ISSN 1436-736X (Vol. 80, 2022, str. 501–514)
    Type of material - e-article
    Publish date - 2022
    Language - english
    COBISS.SI-ID - 94465795

    Link(s):

    https://doi.org/10.1007/s00107-021-0
    https://link.springer.com/article/10.1007/s00107-021-01779-y
    DOI

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