The impact of natural and artificial weathering on the visual, colour and structural changes of seven tropical woods

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F18%3A75952" target="_blank" >RIV/60460709:41320/18:75952 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00107-017-1228-1" target="_blank" >http://dx.doi.org/10.1007/s00107-017-1228-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00107-017-1228-1" target="_blank" >10.1007/s00107-017-1228-1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The impact of natural and artificial weathering on the visual, colour and structural changes of seven tropical woods

Popis výsledku v původním jazyce

This study investigates the effects of wood weathering on changes in its macroscopic and colour characteristics in connection with changes in its molecular and anatomical structure. Seven hardwoods suitable for outdoor architecture-bangkirai, cumaru, cumaru rosa, ip,, jatoba, kusia, and massaranduba-were exposed to the exterior out of ground contact for 1-36 months according to EN 927-3, and for 1-12 weeks in Xenotest with water spraying according to partly modified EN 927-6. With prolonged weathering, the following changes occurred in the top surfaces of all tropical woods: (1) visual-creation of longitudinal macro-cracks, (2) spectrophotometry and CIE-L . a . b -darkening in exterior exposure mainly due to pollutants, except for ip,, and vice versa lightening in Xenotest, as well as greening and blueing in both modes of exposure, (3) FTIR-faster decrease of guaiacyl than syringyl lignin, absolute decrease of conjugated and unconjugated carbonyl groups in the newly formed lignin-polysaccharide-extra

Název v anglickém jazyce

The impact of natural and artificial weathering on the visual, colour and structural changes of seven tropical woods

Popis výsledku anglicky

This study investigates the effects of wood weathering on changes in its macroscopic and colour characteristics in connection with changes in its molecular and anatomical structure. Seven hardwoods suitable for outdoor architecture-bangkirai, cumaru, cumaru rosa, ip,, jatoba, kusia, and massaranduba-were exposed to the exterior out of ground contact for 1-36 months according to EN 927-3, and for 1-12 weeks in Xenotest with water spraying according to partly modified EN 927-6. With prolonged weathering, the following changes occurred in the top surfaces of all tropical woods: (1) visual-creation of longitudinal macro-cracks, (2) spectrophotometry and CIE-L . a . b -darkening in exterior exposure mainly due to pollutants, except for ip,, and vice versa lightening in Xenotest, as well as greening and blueing in both modes of exposure, (3) FTIR-faster decrease of guaiacyl than syringyl lignin, absolute decrease of conjugated and unconjugated carbonyl groups in the newly formed lignin-polysaccharide-extra

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20502 - Paper and wood

Projekt

—

Návaznosti

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

Holz als roh-und werkstoff 

ISSN

0018-3768

e-ISSN

—

Svazek periodika

76

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

175-190

Kód UT WoS článku

000419447100016

EID výsledku v databázi Scopus

2-s2.0-85028530977