Effect of heat treatment on hardness, density and color of Populus × canadensis ‘I-214’ wood

Aim of study: To evaluate the effect of heat treatment (HT) on hardness, density and color of Populus × canadensis ´I-214´ (poplar) wood. Area of study: 15-years-old poplar wood from Pomona, Río Negro, Argentina. Materials and methods: 352 samples were exposed to different HT schedules: 120ºC, 160...

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Autores principales: Taraborelli, Carla, Monteoliva, Silvia Estela, Keil, Gabriel Darío, Spavento, Eleana María
Formato: Articulo
Lenguaje:Inglés
Publicado: 2022
Materias:
Ciencias Agrarias
physico-mechanical properties
CIELab system
wood quality
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/155767
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-155767
record_format dspace
spelling I19-R120-10915-1557672023-08-02T20:03:56Z http://sedici.unlp.edu.ar/handle/10915/155767 Effect of heat treatment on hardness, density and color of Populus × canadensis ‘I-214’ wood Taraborelli, Carla Monteoliva, Silvia Estela Keil, Gabriel Darío Spavento, Eleana María 2022 2023-08-02T17:12:01Z en Ciencias Agrarias physico-mechanical properties CIELab system wood quality Aim of study: To evaluate the effect of heat treatment (HT) on hardness, density and color of Populus × canadensis ´I-214´ (poplar) wood. Area of study: 15-years-old poplar wood from Pomona, Río Negro, Argentina. Materials and methods: 352 samples were exposed to different HT schedules: 120ºC, 160ºC, 180ºC and 200°C for 45 min, 90 min, 135 min and 180 min. Hardness, density and color were determined before and after each HT combination. Hardness and density tests were performed following the specifications of IRAM standards and wood color was determined according to CIELab system. Main results: Hardness improved significantly at 160°C for 45 min and 90 min in comparison with control (14.34% and 9.08%, respectively) whereas this property was improved at 120°C in all cases without significant differences. The 200°C: 45 min schedule showed the worst performance with a 20.26% hardness loss. Density was lower than the control in all schedules with losses ranging from 2.50% to 10.00%. Color became darker (decrease in L value, increase in a and b values) as HT intensity increased (mainly temperature), with changes becoming evident at 180°C and 200°C. Research highlights: HT on P. × canadensis ‘I-214’ improved its hardness under two HT schedules, although was not enough to extend the feasible applications, since it still belongs to a category of “soft” wood. Hardness and density did not show a clear correlation and color of poplar wood became darker as HT intensity increased.. Laboratorio de Investigaciones en Madera Instituto de Fisiología Vegetal Articulo Articulo http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Agrarias
physico-mechanical properties
CIELab system
wood quality
spellingShingle Ciencias Agrarias
physico-mechanical properties
CIELab system
wood quality
Taraborelli, Carla
Monteoliva, Silvia Estela
Keil, Gabriel Darío
Spavento, Eleana María
Effect of heat treatment on hardness, density and color of Populus × canadensis ‘I-214’ wood
topic_facet Ciencias Agrarias
physico-mechanical properties
CIELab system
wood quality
description Aim of study: To evaluate the effect of heat treatment (HT) on hardness, density and color of Populus × canadensis ´I-214´ (poplar) wood. Area of study: 15-years-old poplar wood from Pomona, Río Negro, Argentina. Materials and methods: 352 samples were exposed to different HT schedules: 120ºC, 160ºC, 180ºC and 200°C for 45 min, 90 min, 135 min and 180 min. Hardness, density and color were determined before and after each HT combination. Hardness and density tests were performed following the specifications of IRAM standards and wood color was determined according to CIELab system. Main results: Hardness improved significantly at 160°C for 45 min and 90 min in comparison with control (14.34% and 9.08%, respectively) whereas this property was improved at 120°C in all cases without significant differences. The 200°C: 45 min schedule showed the worst performance with a 20.26% hardness loss. Density was lower than the control in all schedules with losses ranging from 2.50% to 10.00%. Color became darker (decrease in L value, increase in a and b values) as HT intensity increased (mainly temperature), with changes becoming evident at 180°C and 200°C. Research highlights: HT on P. × canadensis ‘I-214’ improved its hardness under two HT schedules, although was not enough to extend the feasible applications, since it still belongs to a category of “soft” wood. Hardness and density did not show a clear correlation and color of poplar wood became darker as HT intensity increased..
format Articulo
Articulo
author Taraborelli, Carla
Monteoliva, Silvia Estela
Keil, Gabriel Darío
Spavento, Eleana María
author_facet Taraborelli, Carla
Monteoliva, Silvia Estela
Keil, Gabriel Darío
Spavento, Eleana María
author_sort Taraborelli, Carla
title Effect of heat treatment on hardness, density and color of Populus × canadensis ‘I-214’ wood
title_short Effect of heat treatment on hardness, density and color of Populus × canadensis ‘I-214’ wood
title_full Effect of heat treatment on hardness, density and color of Populus × canadensis ‘I-214’ wood
title_fullStr Effect of heat treatment on hardness, density and color of Populus × canadensis ‘I-214’ wood
title_full_unstemmed Effect of heat treatment on hardness, density and color of Populus × canadensis ‘I-214’ wood
title_sort effect of heat treatment on hardness, density and color of populus × canadensis ‘i-214’ wood
publishDate 2022
url http://sedici.unlp.edu.ar/handle/10915/155767
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AT keilgabrieldario effectofheattreatmentonhardnessdensityandcolorofpopuluscanadensisi214wood
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