Disordering of the Crystal Structure of Cellulose Under Mechanical Activation

E. M. Podgorbunskikh, A. L. Bychkov, N. V. Bulina, O. I. Lomovskii

Результат исследования: Научные публикации в периодических изданияхстатья

10 Цитирования (Scopus)

Аннотация

The present paper describes the study of the effect of mechanochemical activation on the amorphization process of individual α-cellulose and native cellulose being a constituent part of the lignocellulosic material in the form of partially crystalline fibrils. In processing the powder X-ray diffraction data the following methods are used to determine the degree of crystallinity of cellulose: Segal’s, Rietveld’s, and Lorentzian deconvolution. It is demonstrated that mechanical activation of individual α-cellulose in an AGO-2 laboratory planetary ball mill with a shock-shear action results only in grinding and amorphization, while the degree of amorphization increases propotionally to the duration of the power supply. When α-cellulose is treated in an RM-20 flow-through centrifugal roller mill with a shear action, particle agglomeration is observed together with amorphization. When a lignocellulosic material (wheat straw) is treated in a centrifugal roller mill, considerable amorphization occurs only at high energies, and no particle agglomeration is observed.

Язык оригиналаанглийский
Страницы (с-по)201-208
Число страниц8
ЖурналJournal of Structural Chemistry
Том59
Номер выпуска1
DOI
СостояниеОпубликовано - 1 янв 2018

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  • Цитировать

    Podgorbunskikh, E. M., Bychkov, A. L., Bulina, N. V., & Lomovskii, O. I. (2018). Disordering of the Crystal Structure of Cellulose Under Mechanical Activation. Journal of Structural Chemistry, 59(1), 201-208. https://doi.org/10.1134/S0022476618010328