Single step PAA delignification of wood chips for high-performance holocellulose fibersShow others and affiliations
2021 (English)In: Cellulose, ISSN 0969-0239, E-ISSN 1572-882X, Vol. 28, p. 1873-1880Article in journal (Refereed) Published
Abstract [en]
Holocellulose fibers produced by mild delignification form strong fiber networks, without beating or dry-strength agents. Recently, sequential batch delignification using peracetic acid (PAA) on finely cut wood sticks resulted in high-quality holocellulose fibers. Here, single step PAA delignification is developed for wood chips, which is simpler and can be used for larger fiber batches (400 g) with similar, high yield (60%). Such fibers have 1.4% lignin, 25% hemicelluloses content and well-preserved cellulose and hemicellulose molar mass. The corresponding paper sheet materials with a porosity of ~ 50%, have a Young’s modulus of 9 GPa and a strength of 90 MPa. Holocellulose fibers can now be readily investigated for use in larger scale paper, molded fiber and polymer biocomposite materials applications, or for cellulose nanofibril preparation. © 2021, The Author
Place, publisher, year, edition, pages
Springer Science and Business Media B.V. , 2021. Vol. 28, p. 1873-1880
Keywords [en]
Delignification, Holocellulose, Mechanical properties, Molded fibers, Paper, Pulping process, Wood pulp, Cellulose, Wood products, Biocomposite materials, Cellulose and hemicellulose, Dry strength agents, Peracetic acids, Sequential batch, Sheet material, Strong fibers, Fibers
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-51931DOI: 10.1007/s10570-020-03625-5Scopus ID: 2-s2.0-85099015282OAI: oai:DiVA.org:ri-51931DiVA, id: diva2:1520176
Note
Funding details: Kempe Foundation; Funding details: Kempe Foundation, JCK 1835; Funding details: Knut och Alice Wallenbergs Stiftelse, KAW 2018.0451; Funding text 1: This research is supported by the Kempe Foundation. X.Y. and L. A. B. acknowledge funding from the Knut and Alice Wallenberg foundation for the Biocomposites project. Jonas Garemark is acknowledged for contributing work to Fig. .; Funding text 2: This research is supported by the Kempe Foundation. X.Y. and L. A. B. acknowledge funding with Grant number JCK 1835 from the Knut and Alice Wallenberg foundation with Grant number KAW 2018.0451 for the Biocomposites project.
2021-01-202021-01-202022-05-10Bibliographically approved