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A non-solvent approach for high-stiffness all-cellulose biocomposites based on pure wood cellulose
RISE Research Institutes of Sweden, Bioeconomy and Health, Material and Surface Design. KTH Royal Institute of Technology, Sweden; Inventia AB.ORCID iD: 0009-0001-4217-4063
KTH Royal Institute of Technology, Sweden.
KTH Royal Institute of Technology, Sweden; Inventia AB, Sweden.
KTH Royal Institute of Technology, Sweden; .
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2010 (English)In: Composites Science And Technology, ISSN 0266-3538, E-ISSN 1879-1050, Vol. 70, no 12, p. 1704-1712Article in journal (Refereed) Published
Abstract [en]

All-cellulose composites are commonly prepared using cellulose solvents. In this study, moldable all-cellulose I wood fiber materials of high cellulose purity (97%) were successfully compression molded. Water is the only processing aid. The material is interesting as a “green” biocomposite for industrial applications. Dissolving wood fiber pulps (Eucalyptus hardwood and conifer softwood) are used and the influence of pulp origin, beating and pressing temperature (20–180 °C) on supramolecular cellulose nanostructure is studied by solid state CP/MAS 13C NMR. Average molar mass is determined by SEC to assess process degradation effects. Mechanical properties are determined in tensile tests. High-density composites were obtained with a Young’s modulus of up to 13 GPa. In addition, nanoscale cellulose fibril aggregation was confirmed due to processing, and resulted in a less moisture sensitive material.

Place, publisher, year, edition, pages
2010. Vol. 70, no 12, p. 1704-1712
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Paper, Pulp and Fiber Technology
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URN: urn:nbn:se:ri:diva-74738DOI: 10.1016/j.compscitech.2010.06.016OAI: oai:DiVA.org:ri-74738DiVA, id: diva2:1887021
Available from: 2024-08-06 Created: 2024-08-06 Last updated: 2024-08-07Bibliographically approved

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Nilsson, Helena

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