RT info:eu-repo/semantics/article
T1 Silver nanoparticles and chitosan oligomers composites as poplar wood protective treatments against wood-decay fungi and termites
A1 Spavento, Eleana
A1 Troya Franco, María Teresa de
A1 Acuña Rello, Luis
A1 Murace, Mónica
A1 Santos, Sara María
A1 Casado Sanz, María Milagrosa
A1 Martínez López, Roberto Diego
A1 Martín Gil, Jesús
A1 Álvarez Martínez, Javier
A1 Martín Ramos, Pablo
K1 Silver
K1 Nanoparticles
K1 Durability
K1 Nanocomposite
K1 Nanocomposites (Materials)
K1 Nanoparticulas
K1 Wood - Deterioration
K1 Madera  - Deterioro
K1 Wood - Preservation
K1 Madera - Conservación
K1 Poplar
K1 Álamos
K1 Termitas
K1 Plagas de insectos
K1 Fungi
K1 Forests and forestry
K1 Silver nanoparticles (AgNPs)
K1 Pressure-vacuum treatment
K1 3102 Ingeniería Agrícola
K1 3106 Ciencia Forestal
K1 3108.05 Hongos
AB This study focuses on Populus ×euramericana (Dode) Guinier, a globally distributed fast-growing tree. Despite its valuable wood, it exhibits low durability. The aim of this study was to assess the efficacy of a binary composite comprising silver nanoparticles (AgNPs) and chitosan oligomers (COS) in protecting P. ×euramericana ‘I-214’ wood against degradation caused by xylophagous fungi and termites through vacuum-pressure impregnation. The test material was carefully selected and conditioned following the guidelines of EN 350:2016, and impregnation was carried out in accordance with EN 113-1:2021. Five concentrations of AgNPs–COS composites were utilized. Biodeterioration resistance was evaluated based on EN 350:2016 for white (Trametes versicolor (L.) Lloyd) and brown (Coniophora puteana (Schumach.) P.Karst.) rot fungi, and EN 117:2012 for subterranean termites (Reticulitermis grassei Clément). The durability class and use class were assigned following EN 350:2016 and EN 335:2013, respectively. In comparison to the untreated control, the binary solution at its highest concentration (AgNPs 4 ppm + COS 20 g·L−1) demonstrated a notable reduction in weight loss, decreasing from 41.96 ± 4.49% to 30.15 ± 3.08% for white-rot fungi and from 41.93 ± 4.33% to 27.22 ± 0.66% for brown rot fungi. Furthermore, the observed termite infestation shifted from “heavy” to “attempted attack”, resulting in a decrease in the survival rate from 53.98 ± 10.40% to 26.62 ± 8.63%. Consequently, the durability classification of P. ×euramericana I-214 witnessed an enhancement from “Not durable” to “Slightly” and “Moderately durable” concerning decay fungi and termites, respectively. These findings expand the potential applications of this wood and substantiate the advantages of employing this environmentally friendly treatment.
PB MDPI
SN 1999-4907
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/67142
UL https://uvadoc.uva.es/handle/10324/67142
LA eng
NO Forests, 2023, Vol. 14, Nº. 12, 2316
NO Producción Científica
DS UVaDOC
RD 08-ene-2025