Extraction products from var. ‘Soranovskii’

Extraction products from var. ‘Soranovskii’ Full article

Journal

Chemical Papers
ISSN: 0366-6352 , E-ISSN: 1336-9075

Output data

Year: 2015, Volume: 69, Number: 11, Pages: 1445-1453 Pages count : 9 DOI: 10.1515/chempap-2015-0158

Tags

Miscanthus var. ‘Soranovskii’; hydrothermal treatment; depolymerisation; lignin; acetone organosolv lignin; thermoplasticity

Authors

Il’yasov Sergey G. ¹ , Cherkashin Viktor A. ¹ , Sakovich Gennady V. ¹ , Parkhomenko Dmitri A. ²

Affiliations

1	Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS),
2	International Tomography Centre, Siberian Branch of the Russian Academy of Sciences (ITC SB RAS)

The chemical structures of Miscanthus var. ‘Soranovskii’ lignin fractions released via extraction of lignin from the lignocellulosic feedstock using moderately heated acetone under atmospheric pressure, without acidic and alkaline catalysts, were studied. A blend of Miscanthus stems and leaves was pretreated with water under thermobaric conditions. The acetone organosolv process subsequently afforded a substance related to a lignin-like matter-acetone organosolv Miscanthus lignin (AOML). Non-destructive analytical techniques such as FTIR spectroscopy, gas chromatography-mass spectrometry, size-exclusion chromatography, and 2D NMR were used. The IR and NMR spectroscopies revealed the AOML structure to comprise all the three major types of phenylpropane units: guaiacyl (G), syringyl (S), and p-hydroxyphenyl (H). The resultant acetone-organosolv lignin exhibits good solubility in polar solvents, moderate solubility in aromatic chemicals, and is insoluble in non-polar solvents, exhibiting the physicochemical properties of a thermoplastic polymer with a softening point of 67.0°C (onset 33.0°C, endset 81.5°C).

Il’yasov S.G. , Cherkashin V.A. , Sakovich G.V. , Parkhomenko D.A.
Extraction products from var. ‘Soranovskii’
Chemical Papers. 2015. V.69. N11. P.1445-1453. DOI: 10.1515/chempap-2015-0158 WOS Scopus РИНЦ OpenAlex

Submitted:	Mar 31, 2015
Accepted:	May 15, 2015

Web of science:	WOS:000360928200006
Scopus:	2-s2.0-84941034693
Elibrary:	24946642
OpenAlex:	W2560435426

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