Chemical and Mechanical Characterization of Thermally Modified Gmelina arborea Wood:. Minkah, M. A., Afrifah, K. A., Batista, D. C., & Militz, H. Les/Wood, 70(1):31–44, May, 2021. Number: 1![Chemical and Mechanical Characterization of Thermally Modified Gmelina arborea Wood: [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Gmelina arborea (Roxb. ex. Sm.) wood samples were thermally modified at 180 °C, 200 °C and 220 °C for 3 h, by employing a process similar to ThermoWood®. The resulting effects on the basic chemical composition and mechanical properties were determined. The results were analyzed statistically with ANOVA, and Least Square Deviation was used to compare means. Generally, after the thermal modification (TM) process, the cellulose, hemicelluloses and extractives content decreased significantly. By contrast, lignin proportions increased significantly. Untreated wood and samples modified at 180 °C indicated comparable modulus of elasticity (MOE), modulus of rupture (MOR), degree of integrity (I), fine fraction (F) and resistance to impact milling (RIM). Noteworthy reductions however occurred at 200 °C and 220 °C. Significant increases in Brinell hardness (BH) took place at 180 °C, recording a high decrease at 220 °C. Gmelina arborea could be modified suitably at 180 °C for structural and other purposes. To take advantage of other improved properties, modification at 200 °C could be employed for non-structural uses.
@article{minkah_chemical_2021,
title = {Chemical and {Mechanical} {Characterization} of {Thermally} {Modified} {Gmelina} arborea {Wood}:},
volume = {70},
copyright = {Copyright (c) 2021 Maxidite Amankwaah Minkah},
issn = {2590-9932},
shorttitle = {Chemical and {Mechanical} {Characterization} of {Thermally} {Modified} {Gmelina} arborea {Wood}},
url = {http://www.les-wood.si/index.php/leswood/article/view/108},
doi = {10.26614/les-wood.2021.v70n01a02},
abstract = {Gmelina arborea (Roxb. ex. Sm.) wood samples were thermally modified at 180 °C, 200 °C and 220 °C for 3 h, by employing a process similar to ThermoWood®. The resulting effects on the basic chemical composition and mechanical properties were determined. The results were analyzed statistically with ANOVA, and Least Square Deviation was used to compare means. Generally, after the thermal modification (TM) process, the cellulose, hemicelluloses and extractives content decreased significantly. By contrast, lignin proportions increased significantly. Untreated wood and samples modified at 180 °C indicated comparable modulus of elasticity (MOE), modulus of rupture (MOR), degree of integrity (I), fine fraction (F) and resistance to impact milling (RIM). Noteworthy reductions however occurred at 200 °C and 220 °C. Significant increases in Brinell hardness (BH) took place at 180 °C, recording a high decrease at 220 °C. Gmelina arborea could be modified suitably at 180 °C for structural and other purposes. To take advantage of other improved properties, modification at 200 °C could be employed for non-structural uses.},
language = {en},
number = {1},
urldate = {2021-08-23},
journal = {Les/Wood},
author = {Minkah, Maxidite Amankwaah and Afrifah, Kojo Agyapong and Batista, Djeison Cesar and Militz, Holger},
month = may,
year = {2021},
note = {Number: 1},
keywords = {Thermal modification, High-Energy Multiple Impact (HEMI), Resistance to Impact Milling (RIM), Static Bending},
pages = {31--44},
file = {Full Text PDF:C\:\\Users\\Eva\\Zotero\\storage\\KEFXRIGP\\Minkah et al. - 2021 - Chemical and Mechanical Characterization of Therma.pdf:application/pdf},
}
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