Synthesis of ethylene maleic anhydride copolymer containing fungicides and evaluation of their effect for wood decay resistance

George C. Chen
2008 Holzforschung  
The aim of the present study was to combat wood decay based on the approach controlled-release biocides from polymers. The possibility of introducing polymer-bonded fungicides into the cell lumens was investigated. The synthesis of ethylene maleic anhydride copolymer con taining pentachlorophenol (penta) and 8-hydroxy quino line (8HQ) in N, N dimethyl formamide is described. It was demonstrated that the penta-bonded acrylate is a poly(ethylene co-dipentachlorophenyl diacrylate), which has a
more » ... e), which has a disubstituted pentachlorophenyl group linked through two acrylate ester bonds. The reaction of ethyl ene maleic anhydride copolymer with 8-hydroxy quino line leads to products containing 44.8% poly(ethylene co-8-hydroxy quinolinyl acrylate) and 55.2% of unreac ted poly(ethylene co-maleic anhydride). Wood impreg nated with the polymers described prevented decay by a brown-and white-rot fungus, even after water leaching. Wood treated with the fungicide pentachlorophenol (pen ta) alone prevented only decay by a brown-rot fungus. An advantage is that high loading of penta in polymer can be achieved. Moreover, there is a slow-release effect on the active agent due to hydrolysis of ester bonds. The decay resistance of wood treated with poly(ethylene co 8-quinolinyl acrylate) was similar to that of wood impreg nated with 8-hydroxy quinoline.
doi:10.1515/hf.2008.062 fatcat:m2lwszhs6vcxzcmkoqudiiiwiy