Mild alkaline separation of fiber bundles from eucalyptus bark and their composites with cellulose acetate butyrate

Jinze Dou*, Alp Karakoç, Leena-Sisko Johansson, Sami Hietala, Dmitry Evtyugin, Tapani Vuorinen*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)
111 Downloads (Pure)

Abstract

High surface lignin content (i.e. 34.6 %) sclerenchyma fiber bundles were successfully isolated with a yield of 71 % by a mild alkali (NaOH dosage of 5 wt%) extraction of eucalyptus (Eucalyptus globulus) bark under 100 °C for 60 min. The mechanical properties of the composites prepared by hot pressing of cellulose acetate butyrate (CAB) sheets with the fiber bundles were evaluated. The fiber bundles exhibited good compatibility with CAB due to their hydrophobic fiber surfaces. The mechanical properties of the fiber bundle/ cellulose acetate butyrate composites revealed the maximum at a weight ratio of 25:75, which demonstrates the promise of utilizing these isotropic aligned fiber bundles as the reinforcement to the cellulose acetate butyrate without the addition of plasticizers for composite uses.

Original languageEnglish
Article number113436
Number of pages7
JournalIndustrial Crops and Products
Volume165
Early online date23 Mar 2021
DOIs
Publication statusPublished - Jul 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • Biodegradable
  • Cellulose ester
  • Composite
  • Eucalyptus bark
  • Fiber bundle

Fingerprint

Dive into the research topics of 'Mild alkaline separation of fiber bundles from eucalyptus bark and their composites with cellulose acetate butyrate'. Together they form a unique fingerprint.

Cite this