Mild alkaline separation of fiber bundles from eucalyptus bark and their composites with cellulose acetate butyrate
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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2021-07
Major/Subject
Mcode
Degree programme
Language
en
Pages
7
Series
Industrial Crops and Products, Volume 165
Abstract
High surface lignin content (i.e. 34.6 %) sclerenchyma fiber bundles were successfully isolated with a yield of 71 % by a mild alkali (NaOH dosage of 5 wt%) extraction of eucalyptus (Eucalyptus globulus) bark under 100 °C for 60 min. The mechanical properties of the composites prepared by hot pressing of cellulose acetate butyrate (CAB) sheets with the fiber bundles were evaluated. The fiber bundles exhibited good compatibility with CAB due to their hydrophobic fiber surfaces. The mechanical properties of the fiber bundle/ cellulose acetate butyrate composites revealed the maximum at a weight ratio of 25:75, which demonstrates the promise of utilizing these isotropic aligned fiber bundles as the reinforcement to the cellulose acetate butyrate without the addition of plasticizers for composite uses.Description
Funding Information: This work made use of the Aalto University Nanomicroscopy Center (Aalto-NMC) premises. The authors thank Rita Hatakka from Aalto University for her skillful assistance in HPAEC measurement. This work was a part of the Academy of Finland's Flagship Programme under Projects No. 318890 and 318891 (Competence Center for Materials Bioeconomy, FinnCERES). Authors thank RAIZ (Portuguese Research Institute on Forestry and Paper) for supplying the eucalyptus bark sample used within the scope of the project Inpactus – innovative products and technologies from eucalyptus, Project N.º 21874 funded by Portugal 2020 through European Regional Development Fund (ERDF) in the frame of COMPETE 2020 nº246/AXIS II/2017. Publisher Copyright: © 2021 The Author(s) Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
Keywords
Biodegradable, Cellulose ester, Composite, Eucalyptus bark, Fiber bundle
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Citation
Dou, J, Karakoç, A, Johansson, L-S, Hietala, S, Evtyugin, D & Vuorinen, T 2021, ' Mild alkaline separation of fiber bundles from eucalyptus bark and their composites with cellulose acetate butyrate ', Industrial Crops and Products, vol. 165, 113436 . https://doi.org/10.1016/j.indcrop.2021.113436
