Protective behaviour monitoring on wood photo-degradation by spectroscopic techniques coupled with chemometrics.
This paper reports the investigation on the effect of protective materials on poplar (Populus sp.) wood modifications as consequence of artificial photo-degradation in controlled environment. The novelty of this work is to try to understand what happens to wood surface under the protective layer. Shellac, beeswax and Linfoil® were tested to compare traditional and novel products generally used for wood. The samples, uncovered and covered by these protective layers, were artificially aged. Colour and chemical modifications due to ageing were investigated at different time intervals by reflectance spectrophotometry, Fourier transform infrared spectroscopy and hyperspectral imaging. The obtained data were elaborated by statistical and chemometric tools in order to verify their significance and to assess the relationship between groups of measurements. The results highlighted that shellac, beeswax and Linfoil® materials have a very low protective effect on wood photo-degradation for long times of exposure, by little reducing the changes of wood components.
Department of Chemical Engineering Materials & Environment (DICMA), Sapienza University of Rome, Rome, Italy.
Giuseppe
G
Capobianco
Department of Agricultural and Forestry Sciences (DAFNE), University of Tuscia, Viterbo, Italy.
Luca
L
Calienno
Department of Economics and Management (DEIM), University of Tuscia, Viterbo, Italy. Electronic address: pelosi@unitus.it.
Claudia
C
Pelosi
Department of Agricultural and Forestry Sciences (DAFNE), University of Tuscia, Viterbo, Italy.
Martina
M
Scacchi
Department of Chemical Engineering Materials & Environment (DICMA), Sapienza University of Rome, Rome, Italy.
Giuseppe
G
Bonifazi
Department of Economics and Management (DEIM), University of Tuscia, Viterbo, Italy.
Giorgia
G
Agresti
Department of Agricultural and Forestry Sciences (DAFNE), University of Tuscia, Viterbo, Italy.
Rodolfo
R
Picchio
Department of Economics and Management (DEIM), University of Tuscia, Viterbo, Italy.
Ulderico
U
Santamaria
Department of Chemical Engineering Materials & Environment (DICMA), Sapienza University of Rome, Rome, Italy.
Silvia
S
Serranti
Department of Agricultural and Forestry Sciences (DAFNE), University of Tuscia, Viterbo, Italy.
Angela Lo
AL
Monaco
D003116:Color; D008027:Light; D032107:Populus / Q000737:chemistry; D025341:Principal Component Analysis; D012044:Regression Analysis; D017550:Spectroscopy, Fourier Transform Infrared; D013997:Time Factors; D014934:Wood / Q000528:radiation effects*
Chemometry; Colour measurements; Fourier transform infrared spectroscopy; Hyperspectral imaging; Wood protective