Cellulose nanocrystals with different length-to-diameter ratios extracted from various plants using novel system acetic acid/phosphotungstic acid/octanol-1

Mikhail A. Torlopov, Vasiliy I. Mikhaylov, Elena V. Udoratina, Lyudmila A. Aleshina, Andrey I. Prusskii, Nikolay V. Tsvetkov, Pavel V. Krivoshapkin

Результат исследований: Научные публикации в периодических изданияхстатьярецензирование

22 Цитирования (Scopus)

Аннотация

The novel system [acetic acid/phosphotungstic acid (H3PW12O40)/octanol] was proposed for catalytic solvolysis of cellulose and for obtaining cellulose nanocrystals (CNC). Several alternative experiments involving mixtures with different compositions were carried out; reaction time was also varied. CNC particles from cotton, linen, softwood and hardwood cellulose were prepared in the experiments performed for 40 min in the presence of 0.25 mol% of the heteropolyacid. CNC samples were characterized by transmission electron microscopy and atomic force microscopy, X-ray diffraction analysis, and thermogravimetric analysis. It was established that the resulting nanoparticles had high crystallinity and rod-like shape; their length varied from 160 to 400 nm (cotton CNC had the shortest length, and linen CNC had the longest length), and CNC thickness ranged from 6 to 10 nm. Thermal stability of CNC was lower than that of initial celluloses and decreasing in the following sequence: cotton > softwood > hardwood > linen cellulose.

Язык оригиналаанглийский
Страницы (с-по)1031-1046
Число страниц16
ЖурналCellulose
Том25
Номер выпуска2
DOI
СостояниеОпубликовано - 1 фев 2018

Предметные области Scopus

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