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

authors	Dou, JZ; Karakoc, A; Johansson, LS; Hietala, S; Evtyugin, D; Vuorinen, T
nationality	International
journal	INDUSTRIAL CROPS AND PRODUCTS
author keywords	Eucalyptus bark; Biodegradable; Cellulose ester; Composite; Fiber bundle
keywords	GLOBULUS; WOOD; BIOCOMPOSITES; MORPHOLOGY
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 degrees 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.
publisher	ELSEVIER
issn	0926-6690
isbn	1872-633X
year published	2021
volume	165
digital object identifier (doi)	10.1016/j.indcrop.2021.113436
web of science category	7
subject category	Agricultural Engineering; Agronomy
unique article identifier	WOS:000640560200007