Main Pathways of the Transformations of Lignocellulosic Material under the Action of Ozone

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.

Automated summary

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.