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<p>Understanding the processes involved in wood wettability is essential to improving the finishing and gluing techniques in the wood industry. This knowledge enables the production of high-quality final products with greater added value. Thus, the main objective of this study was to examine the wettability of <i>Corymbia</i> and <i>Eucalyptus</i> wood in the cross, radial, and tangential sections, in different regions of the tree. Nine seven-year-old trees from planted forests, representing four <i>Corymbia</i> and five <i>Eucalyptus</i> species, were used in the study. Wood samples were taken from the inner and outer parts of the stem/trunk. Test specimens measuring 30 × 30 × 15&#xa0;mm were prepared and classified according to the cut plane. From these, the sessile drop method was employed to assess the wettability and its behavior at various times. <i>Corymbia</i> samples showed lower wettability values than Eucalyptus samples. When comparing trunk regions, only the <i>Corymbia</i> wood presented greater wettability in the external region. The other genetic materials did not present differences in wettability between the regions. As for the cut sections, the <i>Eucalyptus</i> samples exhibited greater wettability in the cross-section compared to the other sections. Otherwise, the wettability in <i>Corymbia</i> wood did not differ between its cut sections. <i>Eucalyptus</i> wood presented greater wettability in its cross-section, while the wettability was uniform in the internal and external regions. <i>Corymbia</i> wood, on the other hand, presented lower overall wettability, a tendency of greater wettability in the external region, and homogeneity of this variable across its cut planes.</p>

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Wettability of Eucalyptus and Corymbia wood: analysis of the sections and regions of the stem

  • 期刊论文

  • 发表日期：

    2025年1月31日

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  • Ana Paula Ganassoli,
  • Tauana De Souza Mangini,
  • Thiago Campos Monteiro,
  • Angela Luiza Schütz

摘要

Understanding the processes involved in wood wettability is essential to improving the finishing and gluing techniques in the wood industry. This knowledge enables the production of high-quality final products with greater added value. Thus, the main objective of this study was to examine the wettability of Corymbia and Eucalyptus wood in the cross, radial, and tangential sections, in different regions of the tree. Nine seven-year-old trees from planted forests, representing four Corymbia and five Eucalyptus species, were used in the study. Wood samples were taken from the inner and outer parts of the stem/trunk. Test specimens measuring 30 × 30 × 15 mm were prepared and classified according to the cut plane. From these, the sessile drop method was employed to assess the wettability and its behavior at various times. Corymbia samples showed lower wettability values than Eucalyptus samples. When comparing trunk regions, only the Corymbia wood presented greater wettability in the external region. The other genetic materials did not present differences in wettability between the regions. As for the cut sections, the Eucalyptus samples exhibited greater wettability in the cross-section compared to the other sections. Otherwise, the wettability in Corymbia wood did not differ between its cut sections. Eucalyptus wood presented greater wettability in its cross-section, while the wettability was uniform in the internal and external regions. Corymbia wood, on the other hand, presented lower overall wettability, a tendency of greater wettability in the external region, and homogeneity of this variable across its cut planes.