DIMENSIONAL STABILITY AND ROCKWELL HARDNESS OF ANGELIM-SAIA WOOD CHEMICALLY MODIFIED BY ACETYLATION
DOI:
https://doi.org/10.31413/nat.v13i4.20381Keywords:
physical properties, mechanical strength, tropical wood, wood treatment, wood quality.Abstract
Acetylation is a chemical modification technique applied to wood to improve its dimensional stability, mechanical strength, and biological resistance, adding greater value to the material. This study analyzed the technological changes this treatment promoted in Parkia pendula (Willd.) Benth. ex Walp. (angelim-saia) wood. The process consisted of immersing the wood in acetic anhydride at 80°C for two distinct intervals of 3 and 6 hours. The results demonstrated that the exposure time directly influenced the mass gain, being more pronounced after 6 hours of treatment. In contrast, the specific gravity of the wood did not vary significantly between the evaluated times. Regarding water absorption and volumetric swelling, in measurements after 2 hours, 24 hours, and full saturation, the longer treatment duration also proved more efficient. Surface hardness, assessed by the Rockwell test, was higher in the acetylated samples, indicating increased mechanical strength.
References
ABNT_ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS. NBR 7190: Projeto de estruturas de madeira. Rio de Janeiro: ABNT, 2022. 107p.
ADEBAWO, F. G.; NAITHANI, V.; SADEGHIFAR, H.; TILOTTA, D.; LUCIA, L. A.; JAMEEL, H.; OGUNSANWO, O. Y. Morphological and interfacial properties of chemically-modified tropical hardwood. RSC Advances, v. 8, p. 6571-6576, 2016. https://doi.org/10.1039/C5RA19409A
ADEBAWO F. G.; OGUNSANWO, O. Y.; OLAJUYIGBE, S. O. Decay resistance of the acetylated tropical hardwood species. Journal of Forest and Environmental Science, v. 36, n. 3, p. 225-232, 2020. https://doi.org/10.7747/JFES.2020.36.3.225
BATISTA, L.; STANGERLIN, D. M.; MELO, R. R.; SOUZA, A .P.; SILVA, E .S.; PARIZ, E. Resistência mecânica e composição química de madeiras amazônicas deterioradas em ensaios de campo. Madera y Bosques, v. 27, n .1, p. 1-10, 2021. https://doi.org/10.21829/myb.2021.2712079
BAUFLEUR, A. M. Y.; STANGERLIN, D. M.; FERREIRA, M. R.; PARIZ, E.; RODOLFO JUNIOR, F.; PAULA, E. A. O.; MELO, R. R. Effect of acetylation on technological characteristics of Jacaranda copaia wood: Part 1 – Physical and mechanical properties. Nativa, v. 10, n .2, p. 277-282, 2024. https://doi.org/10.31413/nativa.v10i2.13665
BRELID, P. L.; SIMONSON, R.; BERGMAN, O.; NILSSON, T. Resistance of acetylated wood to biological degradation. Holz als Roh- und Werkstoff, v. 58, n. 5, p. 331-337, 2000. https://doi.org/10.1007/s001070050439
CARVALHO, P. E. R. Espécies arbóreas brasileiras. Brasília: Embrapa. 2006, v.2, 627p.
CERMÁK, P.; BAAR, J.; DÖMÉNY, J.; VÝBOHOVÁ, E.; ROUSEK, R.; PAŘIL, P.; OBERLE, A.; ČABALOVÁ, I.; HESS, D.; VODÁK, M.; BRABEC, M. Wood-water interactions of thermally modified acetylated and melamine formaldehyde resin impregnated beech wood. Holzforschung, v. 76, n. 5, p. 437-450, 2022. https://doi.org/10.1515/hf-2021-0164
CHUNG, T. J.; PARK, J.; LEE, H.; KWON, H.; KIM, H.; LEE, Y.; TZE, W. T. Y. The improvement of mechanical properties, thermal stability, and water absorption resistance of an eco-friendly PLA/kenaf biocomposite using acetylation. Applied Sciences, v. 8, n. 3, p. 1-13, 2018. https://doi.org/10.3390/app8030376
DIGAITIS, R.; THYBRING, E. E.; THYGESEN, L. G.; FREDRIKSSON, M. Targeted acetylation of wood: a tool for tuning wood-water interactions. Cellulose, v. 28, p. 8009-8025, 2021. https://doi.org/10.1007/s10570-021-04033-z
ENGELUND, E. T.; THYGESEN, L. G.; SVENSSON, S.; HILL, C. A critical discussion of the physics of wood-water interactions. Wood Sci Technology, v. 47, n. 1, p. 141-161, 2013. https://doi.org/10.1007/s00226-012-0514-7
FIGUEIREDO, G. G.; BORTOLINI, A. T. P.; STANGERLIN, D. M.; PARIZ, E.; OLIVEIRA, D. S. Caracterização tecnológica da madeira de Trattinnickia burserifolia Mart. submetida ao tratamento de acetilação. Nativa, v. 7, n. 4, p. 420-425, 2019. http://dx.doi.org/10.31413/nativa.v7i4.7650
GOMES, D. F. F.; SILVA, J. R. M.; BIANCHI, M. L.; TRUGILHO, P. F. Avaliação da estabilidade dimensional da madeira acetilada de Eucalyptus grandis Hill ex. Maiden. Scientia Forestalis, n. 70, p. 125-130, 2006.
GUO J.; WANG, C.; LI, C.; LIU, Y. Effect of acetylation on the physical and mechanical performances of mechanical densified spruce wood. Forests, v. 13, n. 10, e1620, 2022. https://doi.org/10.3390/f13101620
HILL, C. A. S. Wood modification: Chemical, thermal and other processes. West Sussex: John Wiley & Sons, 2006. 239p.
JONES, D.; SANDBERG, D. A. Review of wood modification globally – updated findings from COST FP1407. Interdisciplinary Perspectives on the Built Environment, v. 1, n. 1, p. 1-31, 2020. https://doi.org/10.37947/ipbe.2020.vol1.1
MANTANIS, G. I.; LYKIDIS, C.; PAPADOPOULOS, A. N. Durability of Accoya wood in ground stake testing after 10 years of exposure in Greece. Polymers, v. 12, e1638, 2020. https://doi.org/10.3390/polym12081638
MOYA, R. R.; GAITÁN-ALVAREZ, J.; BERROCAL, A.; CACERES, C. B.; HERNÁNDEZ, R. E. Wood properties of nine acetylated tropical hardwoods from fast-grown plantations in Costa Rica. Wood and Fiber Science, v. 54, n. 2, p. 134-138, 2022. https://doi.org/10.22382/wfs-2022-14
QUINTANA, E.; AGO, M.; VALLS, C.; RONCERO, M. B.; ROJAS, O. J. Alternative chemo-enzymatic treatment for homogeneous and heterogeneous acetylation of wood fibers. Cellulose, v. 25, n. 9, p. 5323-5336, 2018. https://doi.org/10.1007/s10570-018-1947-4
ROWELL, R. M. Handbook of wood chemistry and wood composites. Boca Raton: CRC Press. 2012. 703p.
ROWELL, R. M. Innovation in wood preservation. Polymers, v. 12, n. 7, p. 1-7, 2020. http://dx.doi.org/10.3390/polym12071511
SANDAK, A.; GORDOBIL, O.; POOHPHAJAI, F.; DIAZ R. H. Weathering of wood modified with acetic anhydride - Physical, chemical, and aesthetic evaluation. Forests, v. 15, n. 7, e1097, 2024. https://doi.org/10.3390/f15071097
PAPADOPOULOS, A. N.; TOUNTZIARAKIS, P. The effect of acetylation on the Janka hardness of pine wood. European Journal of Wood and Wood Products, v. 69, n. 3, p. 499-500, 2011. https://doi.org/10.1007/s00107-010-0484-0
SILVA, E. S.; BONFATTI JÚNIOR, E. A.; SILVA, G. A. O.; CURVO, K. R.; STANGERLIN, D. M.; MELO, R. R.; SOUZA, A. P. Deterioração da superfície de cinco madeiras amazônicas expostas ao intemperismo natural. Madera y Bosques, v. 28, n. 2, p.1-13, 2022. https://doi.org/10.21829/myb.2022.2822405
STANGERLIN, D. M.; COSTA, A. F.; PASTORE, T. C. M.; GARLET, A. Dureza Rockwell da madeira de três espécies amazônicas submetidas a ensaios de apodrecimento acelerado. Ciência Rural, v. 43, n. 4, p. 623-630, 2013. https://doi.org/10.1590/S0103-84782013005000022
WOJEICCHOWSKI, J. P.; SOQUEORA, G. L. A.; LACERDA, L. G.; SCHNOTZLER, E.; DEMIATE, I. M. Physicochemical, structural and thermal properties of oxidized, acetylated and dual-modified common bean (Phaseolus vulgaris L.) starch. Food Science and Technology, v. 38, n. 2, p. 318-327, 2018. https://doi.org/10.1590/1678-457x.04117
Downloads
Published
Issue
Section
How to Cite
License
Copyright (c) 2025 Nativa
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Copyright for articles published in this journal are the authors, with first publication rights granted to the journal. The journal shows open access, and articles are free to use, with proper attribution, in educational and non-commercial.
The articles published in this journal may be reproduced in part or used as a reference by other authors, provided that the source is quoted.
