Journal article
Isolation and Characterization of Cellulose Micro/Nanofibrils from Douglas Fir
Journal of polymers and the environment, Vol.26(3), pp.1012-1023
03/2018
Handle:
https://hdl.handle.net/2376/105997
Abstract
Cellulose micro/nanofibrils were successfully extracted from softwood Douglas fir in three distinct stages. Initially raw Douglas fir wood chips were subjected to a hot water extraction (HWE) treatment. Then HWE treated cellulosic fibers underwent a bleaching process followed by a mild ultrasonication. Chemical composition analysis according to ASTM standards confirmed that most of hemicelluloses and nearly all lignin were removed during the first two stages, respectively. Microscopy studies showed formation of nanofibrils during the ultrasonication process, and increasing ultrasonication time led to generation of greater percentage of nanofibrils. With the removal of the matrix materials, the crystallinity of the cellulosic fibers was increased, whereas thermal stability was maintained. HWE opened up the cell wall structure, thereby facilitating the subsequent fractionation into micro/nanofibrils. The obtained cellulose micro/nanofibrils could serve as reinforcing material in composite products or raw material for other applications, such as filtration membrane.
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Details
- Title
- Isolation and Characterization of Cellulose Micro/Nanofibrils from Douglas Fir
- Creators
- Rui Zhu - Xinxiu New Materials Co., Ltd. 3080 Olcott St, Suite A115 Santa Clara CA 95054 USAVikram Yadama - 0000 0001 2157 6568 grid.30064.31 Department of Civil and Environmental Engineering Washington State University Pullman WA 99164 USA
- Publication Details
- Journal of polymers and the environment, Vol.26(3), pp.1012-1023
- Academic Unit
- Civil and Environmental Engineering, Department of
- Publisher
- Springer US; New York
- Grant note
- 2011-68005-30416 / National Institute of Food and Agriculture (http://dx.doi.org/10.13039/100005825)
- Identifiers
- 99900546649101842
- Language
- English
- Resource Type
- Journal article