Effect of the mechanical treatment on structural features of cellulose obtained from Cannabis ruderalis Janisch

Akatan K. Kabdrakhmanova S.K. Abilev M.B. Ibraeva Z.E. Nurgamit K. Bukunova A.S. Imasheva A.A.
2021 Scibulcom Ltd.

Oxidation Communications
2021 #44 Issue 1 231 - 242 pp.

The research described in this paper aimed to examine the effect of mechanical activation in a ball mill on the structural features of cellulose obtained by the method of organic solvent oxidation from the stems of hemp (Cannabis ruderalis Janisch.), a common annual plant in the Eastern region of the Republic of Kazakhstan. According to the results obtained by infrared spectroscopy and X-ray diffractometry, the crystal structure of the cellulose changed according to certain patterns with increasing speed and time of mechanical activation. IR spectroscopy showed that as the activation rate increased, the value of the absorption spectrum, which characterises the C–O bond signal characteristic of the original cellulose, decreased and disappeared completely at 400 rpm. As a result, the amount of cellulose crystallites decreased and amorphous particles increased. This pattern was also observed by the method of X-ray diffractometry: at 400 rpm, the crystallinity index decreased by 12.2 nm units leading to the excessive destruction of the crystal structure of the cellulose. The surface morphology of the cellulose was maximised with increasing machining speed, and the crystallites were minimised.

Ball mill , Cellulose , Cellulose crystal structure , Hemp stems , Mechanical activation

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Amanzholov University, 18/1 Amurskaya Street, Ust-Kamenogorsk, Kazakhstan
Abay Kazakh National Pedagogical University, 13 Dostyk Avenue, Almaty, Kazakhstan
D. Serikbayev East Kazakhstan State Technical University, 69 Protozanov Street, Ust-Kamenogorsk, Kazakhstan

Amanzholov University
Abay Kazakh National Pedagogical University
D. Serikbayev East Kazakhstan State Technical University

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