Journal
HOLZFORSCHUNG
Volume 71, Issue 1, Pages 65-75Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1515/hf-2016-0010
Keywords
Coniophora puteana; Coriolus versicolor; Kalotermes flavicollis; polyamidoamines; Poria placenta; Reticulitermes lucifugus; sol-gel; Stegobium paniceum; wood decay
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Funding
- RENNER SpA, Minerbio, Bologna (IT)
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A novel treatment based on polyamidoamines (PAAs) for the preservation of wood against fungi and insects with a broad protection functionality, low effective concentration, and low environmental impact has been developed. PAAs were synthesized by nucleophile addition of ethanolamine (EtA) and/or 3-aminopropyltriethoxysilane (APTES) to N, N'-methylene-bisacrylamide (MBA). The molar ratios in the tested formulation were: I) MBA: EtA = 1:1; II) MBA: APTES = 1:1; III) MBA: EtA: APTES = 1:0.5:0.5. These formulations, characterized by ESI-MS, NMR, FT-IR, were tested against: (a) the wood decay fungi (Coniophora puteana, Coriolus versicolor, and Poria placenta); (b) the subterranean termite Reticulitermes lucifugus, and the drywood termite Kalotermes flavicollis; (c) the woodborer Stegobium paniceum. Tests in combination with leaching showed that formulation II and III can be utilized as fungal wood preservatives for use classes 2-3 (EN 335: 2013). In addition, all PAAs formulations were equally effective in preserving wood against the subterranean termite, and formulation II was most effective against drywood termite. On the other hand, the formulation I showed good efficacy against S. paniceum.A novel treatment based on polyamidoamines (PAAs) for the preservation of wood against fungi and insects with a broad protection functionality, low effective concentration, and low environmental impact has been developed. PAAs were synthesized by nucleophile addition of ethanolamine (EtA) and/or 3-aminopropyltriethoxysilane (APTES) to N, N'-methylene-bisacrylamide (MBA). The molar ratios in the tested formulation were: I) MBA: EtA = 1:1;II) MBA: APTES = 1:1;III) MBA: EtA: APTES = 1:0.5:0.5. These formulations, characterized by ESI-MS, NMR, FT-IR, were tested against: (a) the wood decay fungi (Coniophora puteana, Coriolus versicolor, and Poria placenta); (b) the subterranean -termite Reticulitermes lucifugus, and the drywood termite Kalotermes flavicollis; (c) the woodborer Stegobium paniceum. Tests in combination with leaching showed that formulation II and III can be utilized as fungal wood preservatives for use classes 2-3 (EN 335:2013). In addition, all PAAs formulations were equally effective in preserving wood against the subterranean termite, and formulation II was most effective against drywood termite. On the other hand, the formulation I showed good efficacy against S. paniceum.
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