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

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http://hdl.handle.net/10138/330196

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Dou , J , Karakoc , A , Johansson , L-S , Hietala , S , Evtyugin , D & Vuorinen , T 2021 , ' Mild alkaline separation of fiber bundles from eucalyptus bark and their composites with cellulose acetate butyrate ' , Industrial Crops and Products , vol. 165 , 113436 . https://doi.org/10.1016/j.indcrop.2021.113436

Title: Mild alkaline separation of fiber bundles from eucalyptus bark and their composites with cellulose acetate butyrate
Author: Dou, Jinze; Karakoc, Alp; Johansson, Leena-Sisko; Hietala, Sami; Evtyugin, Dmitr; Vuorinen, Tapani
Contributor: University of Helsinki, Department of Chemistry
Date: 2021-07
Language: eng
Number of pages: 7
Belongs to series: Industrial Crops and Products
ISSN: 0926-6690
URI: http://hdl.handle.net/10138/330196
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.
Subject: 116 Chemical sciences
Eucalyptus bark
Biodegradable
Cellulose ester
Composite
Fiber bundle
GLOBULUS
WOOD
BIOCOMPOSITES
MORPHOLOGY
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