Emulsions of cellulose oxalate from Norway spruce (Picea abies) bark and dissolving pulp

Abstract: Tree bark is normally a side-stream product but by an integrated bark biorefinery approach, valuable compounds may be recovered and used to replace fossil-based products. Norway spruce bark was extracted to obtain cellulose, which was chemically treated to produce cellulose oxalate (COX) which was homogenized to yield nanocellulose. The nanocellulose was used to produce Pickering emulsions with almond oil and hexadecane as organic phases. COX from dissolving pulp was used to study the effect of various raw materials on the emulsifying properties. The COX samples of bark and dissolving pulp contained a significant amount of hemicelluloses, which affected the viscosity results. The emulsion properties were affected by the organic phases and the aspect ratio. Emulsions using hexadecane were more stable than the emulsions using almond oil. Since the aspect ratio of bark was lower than that of the dissolving pulp, the emulsifying properties of the COX dissolving pulp was better. It has been shown that nanocellulose from cellulose oxalate of both spruce bark and dissolving pulp is a promising substitute for petroleum-based emulsifiers and surfactants. By utilizing bark, value-added products can be produced which may be economically beneficial for various industries in the future and their aim for climate-neutral products.

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch

Bibliographic citation
Emulsions of cellulose oxalate from Norway spruce (Picea abies) bark and dissolving pulp ; volume:77 ; number:7 ; year:2023 ; pages:554-565 ; extent:12
Holzforschung ; 77, Heft 7 (2023), 554-565 (gesamt 12)

Creator
Kwan, Isabella
Rietzler, Barbara
Ek, Monica

DOI
10.1515/hf-2022-0191
URN
urn:nbn:de:101:1-2023071214115016535951
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
14.08.2025, 10:49 AM CEST

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Associated

  • Kwan, Isabella
  • Rietzler, Barbara
  • Ek, Monica

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