Impact of thermal modification on color and chemical changes of spruce and oak wood

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F18%3A77734" target="_blank" >RIV/60460709:41320/18:77734 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s10086-018-1721-0" target="_blank" >http://dx.doi.org/10.1007/s10086-018-1721-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10086-018-1721-0" target="_blank" >10.1007/s10086-018-1721-0</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Impact of thermal modification on color and chemical changes of spruce and oak wood

Popis výsledku v původním jazyce

Thermal modification of wood is an environment-friendly alternative method for improving several properties of wood without the use of chemicals. This paper deals with the examination of color and chemical changes in spruce (Picea abies L.) and oak wood (Quercus robur F.) that occur due to thermal treatment. The thermal modification was performed at 160, 180, and 210 degrees C according to thermowood process. The color changes were measured by the spectrophotometer and described in the L a b color system. Chemical changes were examined by wet chemistry methods, infrared spectroscopy and liquid chromatography. During the experiment, oak samples showed smaller color changes than spruce samples at all temperature values. During thermal modification, the content of cellulose, lignin, and extractives increases, however, the hemicellulose content drops by 58,85% (oak) and by 37,40% (spruce). In addition to deacetylation, new carbonyl and carboxyl groups are formed as a result of oxidation. Bonds in lignin

Název v anglickém jazyce

Impact of thermal modification on color and chemical changes of spruce and oak wood

Popis výsledku anglicky

Thermal modification of wood is an environment-friendly alternative method for improving several properties of wood without the use of chemicals. This paper deals with the examination of color and chemical changes in spruce (Picea abies L.) and oak wood (Quercus robur F.) that occur due to thermal treatment. The thermal modification was performed at 160, 180, and 210 degrees C according to thermowood process. The color changes were measured by the spectrophotometer and described in the L a b color system. Chemical changes were examined by wet chemistry methods, infrared spectroscopy and liquid chromatography. During the experiment, oak samples showed smaller color changes than spruce samples at all temperature values. During thermal modification, the content of cellulose, lignin, and extractives increases, however, the hemicellulose content drops by 58,85% (oak) and by 37,40% (spruce). In addition to deacetylation, new carbonyl and carboxyl groups are formed as a result of oxidation. Bonds in lignin

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20502 - Paper and wood

Projekt

<a href="/cs/project/EF16_019%2F0000803" target="_blank" >EF16_019/0000803: Excelentní Výzkum jako podpora Adaptace lesnictví a dřevařství na globální změnu a 4. průmyslovou revoluci</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

JOURNAL OF WOOD SCIENCE

ISSN

1435-0211

e-ISSN

—

Svazek periodika

64

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

11

Strana od-do

406-416

Kód UT WoS článku

000440078100009

EID výsledku v databázi Scopus

2-s2.0-85045122137