Development the technology of obtaining microcrystalline cellulose from the hemp fibers

Authors

DOI:

https://doi.org/10.15587/1729-4061.2016.71275

Keywords:

microcrystalline cellulose, hemp fiber, extraction, hydrolysis, X­ray diffraction, thermogravimetric analysis

Abstract

A new, environmentally cleaner, technology of obtaining microcrystalline cellulose of fibers of hemp was proposed. The various stages of obtaining microcrystalline cellulose were studied and the optimum values of technological parameters of alkali extraction of hemp fibers, organosolv pulping, chelation and hydrolysis of cellulose were defined. It was determined that the consistent treatment of fibers of hemp by extraction of 5 % KOH solution during 210 minutes at the temperature of 95 °С, performic cooking in  a mixture of 85 % formic acid and 30 % of hydrogen peroxide in the ratio of 60:40 of volume % at 100 °C during 210 min, chelation by  the solution of  trilon B of the concentration of 10 g/l during 30 min at 50 °C and hydrolysis by a mixture of 98 % acetic acid and 30 % of hydrogen peroxide solution in the ratio of 70:30 of volume %, allows obtaining microcrystalline cellulose in the form of white powder with a degree of polymerization 80 and the content of sulfate ash of 0.10 %. Using the methods of scanning electronic microscopy, thermogravimentric analysis and X­ray diffraction confirmed that the consistent multistage chemical treatment increases the content of crystalline part of cellulose by the removal of extractive and mineral substances, hemicelllulose and amorphous fraction of cellulose of the fibers of hemp. Application of the proposed technology of obtaining microcrystalline cellulose from the fibers of hemp is environmentally more friendly and enables to reduce significantly the cost of finished products by using national, annually renewable plant raw materials compared to imported cotton or pine cellulose.

Author Biographies

Valerii Barbash, National Technical University Ukraine “Kyiv Polytechnic Institute” Peremohy ave., 37, Kyiv, Ukraine, 03056

PhD, Associate professor

Department of ecology and plant polymer technologies

Mariia Karakutsa, National Technical University Ukraine “Kyiv Polytechnic Institute” Peremohy ave., 37, Kyiv, Ukraine, 03056

Department of ecology and plant polymer technologies

Irina Trembus, National Technical University Ukraine “Kyiv Polytechnic Institute” Peremohy ave., 37, Kyiv, Ukraine, 03056

PhD, Associate professor

Department of ecology and plant polymer technologies

Olha Yashchenko, National Technical University Ukraine “Kyiv Polytechnic Institute” Peremohy ave., 37, Kyiv, Ukraine, 03056

Postgraduate student

Department of ecology and plant polymer technologies

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Published

2016-06-26

How to Cite

Barbash, V., Karakutsa, M., Trembus, I., & Yashchenko, O. (2016). Development the technology of obtaining microcrystalline cellulose from the hemp fibers. Eastern-European Journal of Enterprise Technologies, 3(6(81), 51–56. https://doi.org/10.15587/1729-4061.2016.71275

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Section

Technology organic and inorganic substances