期刊
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
卷 95, 期 11, 页码 2214-2221出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0036024421110133
关键词
ozone; wood; delignification; thermal analysis; Raman spectra; scanning electron microscopy
资金
- RF Ministry of Higher Education and Science as part of State Task [AAAAA21-121011990019-4]
The study reveals that ozone treatment results in the destruction of lignin and hemicelluloses in pine wood, with the presence of water contributing to the degradation of cellulose. Water content plays a role in regulating reactions on the internal surfaces of pores, affecting the destruction of lignin and hemicelluloses.
Lignocellulose materials (LMCs) treated with ozone and different amounts of water are studied via Raman spectroscopy, thermal analysis (TA), and scanning electron microscopy (SEM). It is shown that the lignin and hemicelluloses (HCs) in pine wood are destroyed under the effect of ozone. SEM visualization of the porous structure of wood testifies to the destruction of cellulose during ozonation. It is noted that the content of water in wood helps regulate the contribution from reactions that occur on the internal surfaces of pores and result mainly in the destruction of lignin and HCs, along with the modification of lignin and the destruction of cellulose on the external surfaces of LCMs during free radical reactions.
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