Potencial tecnológico da espécie Inga cylindrica (Vell.) Mart. para o setor de base florestal

Abstract

The general aim of this study was to characterize the wood of Inga cylindrica (Vell.) Mart. for the forestry sector. Five trees were used and samples were taken to determine the physicalmechanical, anatomical and chemical properties of the wood. After slaughter, they were dried and packaged to prepare the specimens. The tests followed the procedures and standards: BURGER; RICHTER (1991); IAWA (1989); COPANT (1974); TAPPI T-64 cm-97 (TAPPI, 1997); TAPPI T-204 cm-97 (TAPPI, 1997); TAPPI T-222 om-02 (TAPPI, 1998); TAPPI T- 211 om-93 (TAPPI, 1994); NBR 7190-3: 2022; COPANT R- 555 (COPANT, 1973) e COPANT R-464 (COPANT, 1972). The results found for physical properties showed that the wood of Inga cylindrica (Vell.) Mart. was characterized as having a medium specific mass and the anisotropy coefficient was considered normal, however, due to the high volumetric contraction, it can be evaluated as a low stability wood. In terms of mechanical properties, the wood showed medium resistance to compression parallel to the fibers and to static bending, and high resistance to cutting, and in terms of Janka hardness, it was classified as a medium-hard wood. In terms of anatomical properties, the wood was characterized as short-fibred, but its length was greater than that of other exotic and native species, indicating the quality of the fibres for pulp and paper production. With regard to the chemical parameters, the holocellulose and lignin contents are close to those recorded in the literature for Eucalyptus spp. It is recommended that the high extractive and ash content be better evaluated.