期刊
CARBOHYDRATE POLYMERS
卷 119, 期 -, 页码 8-17出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2014.11.031
关键词
Salix miyabeana cellulose fibres; Dilute-acid steam explosion; Severity factor; Structural changes; Physical characterization
资金
- BiofuelNet Canada
- Industrial Research Chair on Cellulosic Ethanol and Biocommodities of the Universite de Sherbrooke
- CRB Innovations
- Ministere de l'Energie et des Ressources naturelles du Quebec
- Enerkem
- Ethanol Greenfield Quebec Inc.
Dilute-acid steam explosion of Salix miyabeana has been carried out to understand the effect of processing conditions, expressed through a severity factors (SFT), on the changes in cellulose fibre structures in a perspective of using these in polymer composites. This thermo-chemico-mechanical extraction leads to the isolation of cellulose fibres as observed by SEM images. Fibre length as well as length to diameter aspect ratios decreased with the severity of the treatment. Likewise, fibre whiteness diminished with an increasing severity factor, which could be a tangible effect of physical degradation. Variations in crystallinity seemed to be dependent upon the reaction temperature, generally decreasing with regards to retention time. Above a severity threshold, a structural disorganization was observed. Overall, dilute-acid steam explosion was shown to be a valuable cellulose extraction process that can provide a variety of fibre structures. (C) 2014 Elsevier Ltd. All rights reserved.
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