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Castañeda Estremadoyro, Álvaro
Alternative names
Publications (2 of 2) Show all publications
von Schreeb, A., Sjöström, J., Castañeda, Á., Curman, J., Ek, M. & Henriksson, G. (2026). Converting paper grade chemical pulps to highly reactive cellulose. Holzforschung, 80(7), 571-581
Open this publication in new window or tab >>Converting paper grade chemical pulps to highly reactive cellulose
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2026 (English)In: Holzforschung, ISSN 0018-3830, E-ISSN 1437-434X, Vol. 80, no 7, p. 571-581Article in journal (Refereed) Published
Abstract [en]

In pursuit of sustainable alternatives to fossil-based materials, cellulose-based products, such as regenerated cellulose and cellulose derivatives, have attracted increasing attention. These materials offer biodegradability, biocompatibility, and a wide range of adjustable properties. However, their production relies on dissolving pulps, which are significantly more expensive than standard paper-grade pulps due to high raw material and processing costs. In this study, a potential route for converting standard bleached chemical pulps into more reactive cellulose was investigated, targeting applications in cellulose derivatives and regenerated materials. The method is based on acidic treatment followed by cold alkali dissolution and precipitation. Results show increased chemical reactivity and partial hemicellulose removal, suggesting a promising path toward low-cost alternatives to conventional dissolving pulp.

Place, publisher, year, edition, pages
Walter de Gruyter GmbH, 2026
Keywords
cold alkali, chemical pulp, dissolving pulp, purity, reactivity
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:kth:diva-381063 (URN)10.1515/hf-2026-0016 (DOI)001757553400001 ()2-s2.0-105038682608 (Scopus ID)
Funder
Knut and Alice Wallenberg Foundation
Note

QC 20260710

Available from: 2026-05-11 Created: 2026-05-11 Last updated: 2026-07-10Bibliographically approved
Sjöström, J., Castañeda, Á., Esteves, C., Sevastyanova, O., Henriksson, G. & Vikström, T.Oxygen transfer and lignin diffusion studied through staged delignification and turbulent mixing.
Open this publication in new window or tab >>Oxygen transfer and lignin diffusion studied through staged delignification and turbulent mixing
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(English)Manuscript (preprint) (Other academic)
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:kth:diva-374253 (URN)
Note

QC 20251219

Available from: 2025-12-16 Created: 2025-12-16 Last updated: 2026-01-21Bibliographically approved
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