期刊
JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY
卷 37, 期 5, 页码 359-368出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/02773813.2017.1303514
关键词
Cellulose; degradation; kenaf; lignin; steam explosion
资金
- Award Funds for Outstanding Middle-Aged and Young Scientists of the Shandong Province [BS2014CL044]
- Program for Scientific Research Innovation Team in the Colleges and Universities of the Shandong Province
The study of the main chemical composition degradation, especially cellulose degradation at high temperatures and within high moisture environments, provides important information that can guide biomass processing using steam explosion (STEX) and other similar treatments. In this paper, kenaf bast was treated using STEX at pressures of 0.5, 1.0, and 1.5MPa. The chemical composition change and the infrared spectra were investigated. The crystalline index and degree of polymerization of kenaf cellulose were also quantified. It was found that pectin and hemicellulose could be easily degraded with the STEX treatment, while lignin only exhibited slight decomposition; cellulose degraded at 1.5 MPa STEX treatment on the kenaf. Research also indicates that cellulose with a low molecular weight can be removed with a low-pressure STEX treatment. By coupling STEX with chemical degumming process, the high-quality kenaf fiber with 7.12% residue gum content and 134.5Nm fineness can be obtained.
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