Accelerated artificial aging by ultraviolet irradiation of Eucalyptus benthamii and Pinus caribaea var.hondurensis woods

Authors

  • Sabrina Andrade Martins
  • Cristiane Moreira Tavares dos Santos
  • Joaquim Carlos Gonçalez
  • José Arlete Alves Camargos

DOI:

https://doi.org/10.5380/rf.v41i1.21185

Keywords:

Envelhecimento acelerado, colorimetria, madeira, eucalipto, pínus.

Abstract

The main objective of this research was to study the photo degradation process of superficial color of two wood species, Pinus caribaea var. hondurensis and Eucalyptus benthamii, over ultraviolet irradiation exposure time in a photochemical reactor. Pinus caribaea var. hondurensis samples were evaluated in the radial plane, while Eucalyptus benthamii samples were in tangential plane. The colorimetric parameters measures under the CIELAB 1976 system (L*, a*, b*, C, e h*) were obtained using a Spectophotometer, in the following time intervals: 0, 42, 84, 126 and 168 hours. Both species presented darkening over time, especially in the first hours of exposure. The E. benthamii wood had more changes in its color parameters (DE=19.72) than P. caribaea var. hondurensis wood (DE=17.82) after 168 hours.

Author Biography

Sabrina Andrade Martins


Published

2011-04-05

How to Cite

Martins, S. A., Santos, C. M. T. dos, Gonçalez, J. C., & Camargos, J. A. A. (2011). Accelerated artificial aging by ultraviolet irradiation of Eucalyptus benthamii and Pinus caribaea var.hondurensis woods. Floresta, 41(1). https://doi.org/10.5380/rf.v41i1.21185

Issue

Section

Artigos