Research output: Contribution to journal › Article › peer-review
Cellulose nanocrystals with different length-to-diameter ratios extracted from various plants using novel system acetic acid/phosphotungstic acid/octanol-1. / Torlopov, Mikhail A.; Mikhaylov, Vasiliy I.; Udoratina, Elena V.; Aleshina, Lyudmila A.; Prusskii, Andrey I.; Tsvetkov, Nikolay V.; Krivoshapkin, Pavel V.
In: Cellulose, Vol. 25, No. 2, 01.02.2018, p. 1031-1046.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Cellulose nanocrystals with different length-to-diameter ratios extracted from various plants using novel system acetic acid/phosphotungstic acid/octanol-1
AU - Torlopov, Mikhail A.
AU - Mikhaylov, Vasiliy I.
AU - Udoratina, Elena V.
AU - Aleshina, Lyudmila A.
AU - Prusskii, Andrey I.
AU - Tsvetkov, Nikolay V.
AU - Krivoshapkin, Pavel V.
PY - 2018/2/1
Y1 - 2018/2/1
N2 - 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.
AB - 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.
KW - Catalytic solvolysis of cellulose
KW - Cellulose nanocrystals
KW - Crystallinity
KW - Phosphotungstic acid
KW - Shape and size
KW - Thermostability
UR - http://www.scopus.com/inward/record.url?scp=85038353495&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/cellulose-nanocrystals-different-lengthtodiameter-ratios-extracted-various-plants-using-novel-system
U2 - 10.1007/s10570-017-1624-z
DO - 10.1007/s10570-017-1624-z
M3 - Article
AN - SCOPUS:85038353495
VL - 25
SP - 1031
EP - 1046
JO - Cellulose
JF - Cellulose
SN - 0969-0239
IS - 2
ER -
ID: 36419791