02100nab a2200301 i 4500 BR-BrBNA 20260511131016.0 260511b2020 bl.qr|pooa||| 00| 0 eng | BR-BrBNA eng P07 8905 Arantes, Marina Donária Chaves Trugilho, Paulo Fernando Moulin, Jordão Cabral Goulart, Selma Lopes Baraúna, Edy Eime Pereira Abreu Neto, Raul de Anatomy of Charcoal and Carbonization Effect under Eucalyptus Fibers’ Dimensions Publicação on-line; 17 ref.; 3 tables; 3 illus.; Summary (En) Abstract The anatomy of wood and charcoal was analyzed by scanning electron microscopy in three radial positions of E. urophylla and E. Grandis in different diameter classes at six years. The carbonization process was given in the muffle with an average rate of 0.5 °C increment per minute, using initial temperature of 150 °C and maximum of 450 °C. It was observed that the pore diameter presented higher values in the samples obtained in the internal position. The diameter classes of the trees almost did not influence the characteristics of the fibers. In the external position (close to the shell) fibers with higher values of cell wall thickness and smaller values of lumen diameter and width were identified. The fiber lumen diameter was not affected by the wood carbonization process, whereas the cell wall thickness and fiber width were reduced. Keywords: thermal wood degradation, scanning electron microscopy, pores and fibers of charcoal. CARVÃO VEGETAL POROSIDADE FIBRA MICROSCOPIA ELETRÔNICA 2929 347956 Rio de Janeiro-RJ Instituto de Florestas - UFRRJ 1994 2025-0455 Floresta e Ambiente (Brazil) 1415-0980 / ISSN 2179-8087 0nline v. 27(1) p. 1-7; (2020) BR2026001200 https://www.scielo.br/j/floram/a/WdnkjZ8bwssGFHc85XPcqkL/?format=pdf&lang=en ANA 341740 341740