Novel all-cellulose ecocomposites prepared in ionic liquids

In this study, a kind of novel all-cellulose ecocomposites based on cellulose and rice husk (RH) has been prepared by using green solvent, ionic liquid (IL), as processing medium. Due to the presence of the RH, these ecocomposites also contain an inorganic component, silica. The content and distribu...

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Bibliographic Details
Published in:Cellulose (London) 2009-04, Vol.16 (2), p.217-226
Main Authors: Zhao, Qiang, Yam, Richard C. M, Zhang, Baoqing, Yang, Yingkui, Cheng, Xinjian, Li, Robert K. Y
Format: Article
Language:English
Subjects:
Bioorganic Chemistry
Bonding
Cellulose
Ceramics
Chemistry
Chemistry and Materials Science
Composites
Dynamic mechanical analysis
Elongation
Fillers
Glass
Interfacial bonding
Ionic liquids
Ions
Mechanical properties
Natural Materials
Organic Chemistry
Photoelectrons
Physical Chemistry
Polymer Sciences
Pretreatment
Silicon dioxide
Stiffening
Stiffness
Sustainable Development
Tensile tests
X ray photoelectron spectroscopy
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Summary:In this study, a kind of novel all-cellulose ecocomposites based on cellulose and rice husk (RH) has been prepared by using green solvent, ionic liquid (IL), as processing medium. Due to the presence of the RH, these ecocomposites also contain an inorganic component, silica. The content and distribution of the silica in the ecocomposite have been investigated by energy dispersive X-ray (EDX) and X-ray photoelectron spectroscopy (XPS) analyses. The mechanical properties of these ecocomposites, including both static and dynamic, have been determined by using tensile test and dynamic mechanical analysis (DMA), respectively. The effect of processing conditions on the interfacial bonding and therefore the mechanical performance of the final ecocomposites has been investigated further. Results show that the incorporation of the RH can provide stiffening effect for cellulose matrix, and the pretreatment of RH fillers by IL can enhance the filler/matrix interfacial bonding, thus further improving the mechanical performance of the ecocomposite. By selecting suitable composition ratios and processing conditions optimal mechanical performance with the balance among stiffness, strength and elongation at break can be obtained.
ISSN:0969-0239
1572-882X
DOI:10.1007/s10570-008-9251-3