01999nab a2200265 i 4500003000900000005001700009008004100026040001800067072001400085100003800099100002900137100002900166100002500195100003300220100002400253245008700277500007000364520096200434650002101396650001501417650001001432650002901442773018101471856008101652BR-BrBNA20260511131016.0260511b2020    bl.qr|pooa||| 00| 0 eng |  aBR-BrBNAbeng  aP07b8905  aArantes, Marina Donária Chaves   aTrugilho, Paulo Fernando  aMoulin, Jordão Cabral   aGoulart, Selma Lopes  aBaraúna, Edy Eime Pereira   aAbreu Neto, Raul de  aAnatomy of Charcoal and Carbonization Effect under Eucalyptus Fibers’ Dimensions  aPublicação on-line; 17 ref.; 3 tables; 3 illus.; Summary (En)  a

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.  aCARVÃO VEGETAL  aPOROSIDADE  aFIBRA  aMICROSCOPIA ELETRÔNICA0 02929dRio de Janeiro-RJ Instituto de Florestas - UFRRJ 1994o2025-0455tFloresta e Ambiente (Brazil)x1415-0980  /  ISSN 2179-8087 0nlinegv. 27(1) p. 1-7; (2020)wBR2026001200  uhttps://www.scielo.br/j/floram/a/WdnkjZ8bwssGFHc85XPcqkL/?format=pdf&lang=en