Avaliação da penetração de boro em madeiras de eucalipto pelo método de difusão por bastonetes

Abstract

Wood is an organic material which is subject to deterioration when in use. Therefore, there is a concern to maintain it preserved. Finding less aggressive preservatives to the environment is needed when it comes to wood treating. Boron solutions are an example, which shows a broad toxicity range for a variety of organisms, except for mammals and for the environment. This research aims to evaluate boron diffusion on Eucalyptus cloeziana wood. Thereunto, 5cm wood discs were used, which were perforated and boron rods composed by boric acid and borax were inserted. Afterward, the discs were packed for 20 days in plastic bags. Thereafter, the discs were submitted to a colorimetric test in order to rate the product penetration on wood. The diffusion was satisfactory, also beeing higher at the top when compared with the base. It has been concluded that the preservation method by rods is apparently efficient. However, it is needed to quantify in order to confirm its efficiency.