Data/hora: 06/06/2024 03:32:10

Biblioteca(s): | Embrapa Florestas.
Data corrente: | 15/09/2016
Data da última atualização: | 07/11/2019
Autoria: | MATTOS, B. D.; MAGALHAES, W. L. E.
Afiliação: | Bruno D. Mattos, Doutorando da UFPR; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF.
Título: | Biogenic nanosilica blended by nanofibrillated cellulose as support for slow-release of tebuconazole.
Ano de publicação: | 2016
Fonte/Imprenta: | Journal of Nanoparticle Research, v. 18, n. 9, article 274, Sept. 2016. 10 p.
DOI: | 10.1007/s11051-016-3586-8
Idioma: | Inglês
Conteúdo: | Despite the potential application of nanotechnology in the agricultural sector, it is not as competitive as other industrial sectors because these approaches do not demonstrate a sufficient economic return to counterbalance the high production costs. For biocidal purposes, the reduction of the initial costs can be addressed if biogenic nanosilica and nanofibrillated cellulose were used to prepare nanocomposite for further utilization as support for slow-release of tebuconazole. Infrared spectroscopy and thermogravimetric analysis revealed that biocide was entrapped in the cellulose/silica nanocomposites network. The scanning electron microscopy and X-ray microtomography evaluation showed the nanocomposite?s microstructure based on irregular shape nanosilica blended by nanofibrillated cellulose in a randomly organized network. Elemental mapping images showed the tebuconazole better dispersed in the composite blended with lower content of cellulose. The nanofibrillated cellulose played an important role in the release rate of the biocide mainly at short-term periods. At 15 days of immersion, the pure biocide had 95 % release compared with 30?45 % release of the tebuconazole loaded in the nanocomposites.
Palavras-Chave: | Liberação lenta; Microtomografia de raio X; Nanofibrila de celulose; X-Ray microtomography.
Thesagro: | Cavalinha.
Thesaurus Nal: | Equisetum; Micro-computed tomography; Renewable resources; Tebuconazole.
Categoria do assunto: | X Pesquisa, Tecnologia e Engenharia
Registro original: | Embrapa Florestas (CNPF)
Exemplares: | CNPF - (55276-1) - UPC - AP - DD -  -  -  - DIS