Polyamidoamines (PAAs) functionalized with siloxanes as wood preservatives against fungi and insects

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-a...

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Veröffentlicht in:Holzforschung 2017-01, Vol.71 (1), p.65-75
Hauptverfasser: Bergamonti, Laura, Berzolla, Alessia, Chiappini, Elisabetta, Feci, Elisabetta, Maistrello, Lara, Palanti, Sabrina, Predieri, Giovanni, Vaccari, Giacomo
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Sprache:eng
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Zusammenfassung: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 ( , and ); (b) the subterranean termite and the drywood termite ; (c) the woodborer . Tests in combination with leaching showed that formulation II and III can be utilized as fungal wood preservatives for use classes 2–3 ( :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
ISSN:0018-3830
1437-434X
DOI:10.1515/hf-2016-0010