CHARACTERIZATION OF MACROMOLECULAR TRAITS OF LIGNIN FROM HEAT TREATED SPRUCE WOOD BY SIZE EXCLUSION CHROMATOGRAPHY
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F18%3A78779" target="_blank" >RIV/60460709:41320/18:78779 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.17423/afx.2018.60.2.03" target="_blank" >http://dx.doi.org/10.17423/afx.2018.60.2.03</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.17423/afx.2018.60.2.03" target="_blank" >10.17423/afx.2018.60.2.03</a>
Alternative languages
Result language
angličtina
Original language name
CHARACTERIZATION OF MACROMOLECULAR TRAITS OF LIGNIN FROM HEAT TREATED SPRUCE WOOD BY SIZE EXCLUSION CHROMATOGRAPHY
Original language description
Lignin composition, functionality, purity, molecular weight distribution and degree of cross-linking are of great interest because of their impact on physicochemical properties and influence on its potential applications. In this study, dioxane lignin from spruce wood thermally treated at various temperatures (100, 150, 200, 220, 240, 260, 280 and 300 degrees C) and duration (1, 3 and 5 hours) was investigated by size exclusion chromatography (SEC) using 0,005 M LiBr in DMF on two POLAR-M columns. With increasing temperature and duration of treatment the degradation and condensation reactions take place in lignin. At the temperatures till 200,240 degrees C, the degradation and condensation reactions take place simultaneously, but the lignin macromolecule condensation is predominant, and the molecular weights increase. At the temperatures over 240 degrees C, the decomposition of high molecular fractions of lignin takes place. Under mild conditions of thermal treatment, the extraction of lignin from wo
Czech name
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Czech description
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Classification
Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
20502 - Paper and wood
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Acta Facultatis Xylologiae
ISSN
1336-3824
e-ISSN
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Volume of the periodical
60
Issue of the periodical within the volume
2
Country of publishing house
SK - SLOVAKIA
Number of pages
10
Pages from-to
33-42
UT code for WoS article
000448690700003
EID of the result in the Scopus database
2-s2.0-85055944925