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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Controlled release from hydroxyapatite nanoparticles incorporated into biodegradable, soluble host matrixes

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Autor(es):
Giroto, A. S. [1, 2] ; Fidelis, S. C. [1, 2] ; Ribeiro, C. [2]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Fed Sao Carlos, Dept Chem, BR-13565905 Sao Carlos, SP - Brazil
[2] Embrapa Instrumentat, BR-13560970 Sao Carlos, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: RSC ADVANCES; v. 5, n. 126, p. 104179-104186, 2015.
Citações Web of Science: 9
Resumo

We report in this paper a strategy to prepare nanocomposite fertilizers based on the dispersion of hydroxyapatite (Hap) into urea and thermoplastic starch at nanoscale, where Hap was assumed as a model for poorly soluble phosphate phases, such as phosphate rocks. Our experiments revealed the role of particle agglomeration on the effective phosphate release, showing that Hap dispersion within two water-soluble matrices (urea and thermoplastic starch/urea) is an effective strategy to increase Hap solubility. Aspects such as matrix solubility, morphology and Hap loading were detailed studied. Also, these structures showed an interesting slow-release of urea, i.e., the materials were at the same time a system for faster release of poorly soluble phosphate phases and slow release of very soluble nitrogen source (urea). Our results support the development of a new class of smart fertilizers, with release properties tailored by nanostructure. (AU)

Processo FAPESP: 13/11821-5 - Estudo da solubilização de fosfatos nanométricos dispersos em matrizes de diferentes solubilidades
Beneficiário:Amanda Soares Giroto
Linha de fomento: Bolsas no Brasil - Doutorado