Chemical structure characteristics of wood/lignin composites during mold pressing

To reuse lignin polymers from bioethanol biorefinery plants, wood/lignin composites (WLC) were modified by mold pressing, processed, and analyzed using X‐ray diffractometry, Fourier transform‐infrared spectroscopy, thermogravimetric analysis, and thermal desorption‐gas chromatography‐mass spectromet...

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Bibliographic Details
Published in:Polymer composites 2017-05, Vol.38 (5), p.955-965
Main Authors: Li, Dong‐Li, Ge, Sheng‐Bo, Peng, Wan‐Xi, Wu, Qing‐Ding, Wu, Jian‐Guo
Format: Article
Language:English
Subjects:
Acetic acid
Benzene
Biofuels
Composite materials
Fourier transforms
Gas chromatography
Infrared analysis
Lignin
Mass spectrometry
Molds
Pressing
Thermal degradation
Thermogravimetric analysis
Volatile compounds
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Summary:To reuse lignin polymers from bioethanol biorefinery plants, wood/lignin composites (WLC) were modified by mold pressing, processed, and analyzed using X‐ray diffractometry, Fourier transform‐infrared spectroscopy, thermogravimetric analysis, and thermal desorption‐gas chromatography‐mass spectrometry. With increased temperature and time, cellulose, hemicellulose, and lignin increased the thermal degradation reaction and generated many extracts. Comprehensive analysis of the analytical results suggested that mold pressing at 160°C or 220°C for 20 min was optimal for WLC preparation. However, care should be taken as the volatiles included acetic acid, phenol and its derivatives, and benzene and its derivatives, which are toxic. POLYM. COMPOS., 38:955–965, 2017. © 2015 Society of Plastics Engineers
ISSN:0272-8397
1548-0569
DOI:10.1002/pc.23658