Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2023

Идентификатор DOI: 10.3390/polym15040904

Ключевые слова: spruce wood, microcrystalline cellulose, sulfuric acid hydrolysis, ultrasonic treatment, microfibrillated cellulose

Аннотация: A new approach is being considered for obtaining microfibrillated cellulose with a low degree of polymerization by sulfuric acid hydrolysis with simultaneous ultrasonic treatment under mild conditions (temperature 25 °C, 80% power control). Samples of initial cellulose, MCC, and MFC were characterized by FTIR, XRF, SEM, DLS, and TGA. It was found that a high yield of MFC (86.4 wt.%) and a low SP (94) are observed during hydrolysis with ultrasonic treatment for 90 min. It was shown that the resulting microfibrillated cellulose retains the structure of cellulose I and has an IC of 0.74. It was found that MFC particles are a network of fibrils with an average size of 91.2 nm. ζ-potential of an aqueous suspension of MFC equal to −23.3 mV indicates its high stability. It is noted that MFC has high thermal stability, the maximum decomposition temperature is 333.9 °C. Simultaneous hydrolysis process with ultrasonic treatment to isolate MFC from cellulose obtained by oxidative delignification of spruce wood allows to reduce the number of stages, reduce energy costs, and expand the scope.

Журнал: Polymers

Выпуск журнала: Т.15, №4

Номера страниц: 904

ISSN журнала: 20734360

Место издания: Basel

Издатель: MDPI

• Malyar Yuriy N. (School of Non-Ferrous Metals and Material Science, Siberian Federal University)
• Sudakova Irina G. (Institute of Chemistry and Chemical Technology, Krasnoyarsk Science Center, Siberian Branch Russian Academy of Sciences)
• Borovkova Valentina S. (School of Non-Ferrous Metals and Material Science, Siberian Federal University)
• Chudina Anna I. (Institute of Chemistry and Chemical Technology, Krasnoyarsk Science Center, Siberian Branch Russian Academy of Sciences)
• Mazurova Elena V. (Institute of Chemistry and Chemical Technology, Krasnoyarsk Science Center, Siberian Branch Russian Academy of Sciences)
• Vorobyev Sergey A. (Institute of Chemistry and Chemical Technology, Krasnoyarsk Science Center, Siberian Branch Russian Academy of Sciences)
• Fetisova Olga Yu. (Institute of Chemistry and Chemical Technology, Krasnoyarsk Science Center, Siberian Branch Russian Academy of Sciences)
• Elsufiev Eugene V. (School of Non-Ferrous Metals and Material Science, Siberian Federal University)
• Ivanov Ivan P. (Institute of Chemistry and Chemical Technology, Krasnoyarsk Science Center, Siberian Branch Russian Academy of Sciences)

• Ядро РИНЦ (eLIBRARY.RU)