Changes of Meranti, Padauk, and Merbau Wood Lignin during the ThermoWood Process

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F21%3A89698" target="_blank" >RIV/60460709:41320/21:89698 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mdpi.com/2073-4360/13/7/993" target="_blank" >https://www.mdpi.com/2073-4360/13/7/993</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/polym13070993" target="_blank" >10.3390/polym13070993</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Changes of Meranti, Padauk, and Merbau Wood Lignin during the ThermoWood Process

Popis výsledku v původním jazyce

Thermal modification is an environmentally friendly process in which technological properties of wood are modified using thermal energy without adding chemicals, the result of which is a value-added product. Wood samples of three tropical wood species (meranti, padauk, and merbau) were thermally treated according to the ThermoWood process at various temperatures (160, 180, 210 degrees C) and changes in isolated lignin were evaluated by nitrobenzene oxidation (NBO), Fourier-transform infrared spectroscopy (FTIR), and size exclusion chromatography (SEC). New data on the lignins of the investigated wood species were obtained, e.g., syringyl to guaiacyl ratio values (S/G) were 1,21, 1,70, and 3,09, and molecular weights were approx. 8600, 4300, and 8300 g center dot mol(-1) for meranti, padauk, and merbau, respectively. Higher temperatures cause a decrease of methoxyls and an increase in C=O groups. Simultaneous degradation and condensation reactions in lignin occur during thermal treatment, the latter p

Název v anglickém jazyce

Changes of Meranti, Padauk, and Merbau Wood Lignin during the ThermoWood Process

Popis výsledku anglicky

Thermal modification is an environmentally friendly process in which technological properties of wood are modified using thermal energy without adding chemicals, the result of which is a value-added product. Wood samples of three tropical wood species (meranti, padauk, and merbau) were thermally treated according to the ThermoWood process at various temperatures (160, 180, 210 degrees C) and changes in isolated lignin were evaluated by nitrobenzene oxidation (NBO), Fourier-transform infrared spectroscopy (FTIR), and size exclusion chromatography (SEC). New data on the lignins of the investigated wood species were obtained, e.g., syringyl to guaiacyl ratio values (S/G) were 1,21, 1,70, and 3,09, and molecular weights were approx. 8600, 4300, and 8300 g center dot mol(-1) for meranti, padauk, and merbau, respectively. Higher temperatures cause a decrease of methoxyls and an increase in C=O groups. Simultaneous degradation and condensation reactions in lignin occur during thermal treatment, the latter p

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

POLYMERS

ISSN

2073-4360

e-ISSN

—

Svazek periodika

13

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

15

Strana od-do

1-15

Kód UT WoS článku

000638769400001

EID výsledku v databázi Scopus

2-s2.0-85103675262