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Evaluation of oxygen delignified fibers with high water absorbency, as a greener alternative to fully bleached fibers for tissue paper
RISE Research Institutes of Sweden, Bioeconomy and Health, Pulp, Paper and Packaging.ORCID iD: 0000-0002-0816-0047
2024 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 39, no 4, p. 527-Article in journal (Refereed) Published
Abstract [en]

The potential of oxygen delignified fibers to replace fully bleached fibers in tissue products was investigated on softwood pulps. The absorption, mechanical properties and softness of laboratory tissue hand sheets from one commercial fully bleached pulp and five unbleached oxygen delignified lab pulps were compared. The pulps with different lignin content and total fiber charge were evaluated with and without PFI refining. The pulps subjected to oxygen delignification resulted in pulps with much higher total fiber charge content that led to higher swelling and higher wet strength when compared to the commercial fully bleached pulp. Some unbleached oxygen delignified pulps showed great potential in the absorption capacity, while others showed a much higher wet tensile strength when compared to the commercial pulp. Compared to the commercial bleached pulp, a similar softness for a higher wet and dry tensile index in the unbleached fibers was observed for the oxygen delignified pulps. Unbleached pulps subjected to an extended oxygen delignification proved to be a suitable alternative to fully bleached pulps in tissue grades, depending on the desired property (absorption or wet strength). 

Place, publisher, year, edition, pages
Walter de Gruyter GmbH , 2024. Vol. 39, no 4, p. 527-
Keywords [en]
Bleached pulp; Bleaching; Cleaning; Delignification; Lead refining; Pulp refining; Softwoods; Tensile strength; Unbleached pulp; Absorption capacity; Fibre charge; Fully bleached pulp; High lignin content; High water; Lignin contents; Oxygen delignifications; Oxygen-delignified pulps; Property; Wet strength; Tissue
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-75650DOI: 10.1515/npprj-2024-0024Scopus ID: 2-s2.0-85203416261OAI: oai:DiVA.org:ri-75650DiVA, id: diva2:1909848
Note

 Södra Skogsägarnas Stiftelse för Forskning,Utveckling och Utbildning, 2022–297.

Available from: 2024-11-01 Created: 2024-11-01 Last updated: 2025-09-23Bibliographically approved

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Esteves, Claudia

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