Data/hora: 16/06/2024 00:20:20

Biblioteca(s): 	Embrapa Florestas.	
Data corrente: 	10/07/2017	
Data da última atualização: 	11/07/2017	
Autoria: 	MATTOS, B. D.; MAGALHAES, W. L. E.	
Afiliação: 	Bruno D. Mattos, Doutorando da UFPR; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF.	
Título: 	Design and preparation of carbendazim-loaded alumina nanoparticles as a controlled-release biocide for wood protection.	
Ano de publicação: 	2017	
Fonte/Imprenta: 	International Biodeterioration & Biodegradation, v. 123, p. 174-181, Sept. 2017.	
DOI: 	http://dx.doi.org/10.1016/j.ibiod.2017.06.019	
Idioma: 	Inglês	
Conteúdo: 	Biocide delivery systems are intelligent strategies towards improving the efficiency of biocides over time. Here, we have developed a biocide system by loading alumina nanoparticles with carbendazim through surfactant-assisted ball milling. The obtained biocides were further validated by their impregnation into pinewood, followed by in vitro fungi tests. Fourier-transformed infrared spectroscopy stated physical adsorption of carbendazim on alumina, while the thermogravimetric analysis revealed its adsorption in a pseudo-molecular level. The carbendazim loading efficiency was improved after surfactant addition, which was also fundamental to effectively impregnate the pinewood. The biocide release profiles could be described using the parabolic-diffusion and Korsmeyer-Peppas kinetic models, which fitted the experimental data with determination coefficients over 0.9. After 600 h, the biocide systems have released 42e76% of carbendazim, where systems with higher biocide content released faster. The pinewood solid samples were completely impregnated with the prepared biocides; however, it tended to concentrate on the wood surface. A biocide retention of only 0.4 kg m3 of sufficient to increase in 10 times the decay resistance of the pinewood, indicating very promising results.	
Palavras-Chave: 	Alumina; Engineered nanoparticles; Liberacão lenta; Nanobiocida; Nanobiocides; Pinewood; Slow release; Surfactant-assisted ball milling; Tratamento de madeira.	
Thesagro: 	Madeira; Oxido de alumínio.	
Thesaurus Nal: 	Aluminum oxide; Decay resistance; Wood treatment.	
Categoria do assunto: 	X Pesquisa, Tecnologia e Engenharia	
Registro original: 	Embrapa Florestas (CNPF)	
Exemplares: 	CNPF - (55872-1) - UPC - AP - DD -  -  -  - DIS