All-cellulose composite aerogels and cryogels

Oona Korhonen, Tatiana Budtova*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

26 Citations (Scopus)
56 Downloads (Pure)

Abstract

Porous all-cellulose composites were prepared from pulps dissolved in 8 wt-% NaOH-water and dispersed softwood kraft fibers. Freeze-drying and drying with supercritical CO2 were used to vary the morphology of the composites. As cellulose dissolution in NaOH-water is known to be limited by pulp degree of polymerization, the latter was varied to obtain different amounts of non-dissolved fractions in solution. The goal of the work was to understand the influence of fibers originating from the incomplete dissolution and/or from added kraft fibers on the morphology and properties of porous all-cellulose composites. Density, porosity, pore volume, specific surface area and mechanical properties under compression were determined and correlated with the composite formulations and morphology.

Original languageEnglish
Article number106027
Number of pages8
JournalComposites Part A: Applied Science and Manufacturing
Volume137
DOIs
Publication statusPublished - Oct 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • A. Biocomposite
  • A. Wood fibers
  • B. Mechanical properties
  • B. Porosity

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