Influence of variables on the synthesis of CoFe2O4 pigment by the complex polymerization method

Medeiros, P. N.; Gomes, Yara Feliciano; Delmonte, Maurício Roberto Bomio; Santos, I. M. G.; Silva, M. R. S.; Paskocimas, Carlos Alberto; Li, M. S.; Motta, Fabiana Villela da

Influence of variables on the synthesis of CoFe2O4 pigment by the complex polymerization method

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dc.contributor.author	Medeiros, P. N.
dc.contributor.author	Gomes, Yara Feliciano
dc.contributor.author	Delmonte, Maurício Roberto Bomio
dc.contributor.author	Santos, I. M. G.
dc.contributor.author	Silva, M. R. S.
dc.contributor.author	Paskocimas, Carlos Alberto
dc.contributor.author	Li, M. S.
dc.contributor.author	Motta, Fabiana Villela da
dc.date.accessioned	2021-03-29T19:03:23Z
dc.date.available	2021-03-29T19:03:23Z
dc.date.issued	2015-05-30
dc.description.resumo	Synthetic inorganic pigments are most widely used in ceramic applications due to their excellent chemical and thermal stability and their lower toxicity to both human and environment as well. In the present work, black ceramic pigment CoFe2O4 has been synthesized by the complex polymerization method (CPM) with good chemical homogeneity. In order to study the influence of variables on the process of obtaining pigment through CPM, 2(5-2) fractional factorial design with resolution III was used. The variables studied in the mathematical modeling were: citric acid/metal concentration, pre-calcination time, calcination temperature, calcination time, and calcination rate. Powder pigments were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV-visible (UV-Vis) spectroscopy. Based on the results, the formation of cobalt ferrite phase (CoFe2O4) with spinel structure was verified. The color of pigments obtained showed dark shades, from black to gray. The model adjusted to the conditions proposed in this study due to the determination coefficient of 99.9% and variance (R 2) showed that all factors are significant at the confidence level of 95%	pt_BR
dc.identifier.citation	MEDEIROS, P. N.; GOMES, Y. F.; BOMIO, M. R. D.; SANTOS, I. M. G.; SILVA, M. R. S.; PASKOCIMAS, C. A.; LI, M. S.; MOTTA, F. V.. Influence of variables on the synthesis of CoFe2O4 pigment by the complex polymerization method. Journal of Advanced Ceramics, [S.L.], v. 4, n. 2, p. 135-141, 30 maio 2015. Disponível em: https://link.springer.com/article/10.1007/s40145-015-0145-1. Acesso em: 10 fev. 2021. http://dx.doi.org/10.1007/s40145-015-0145-1	pt_BR
dc.identifier.doi	10.1007/s40145-015-0145-1
dc.identifier.issn	2226-4108
dc.identifier.uri	https://repositorio.ufrn.br/handle/123456789/32022
dc.language	en	pt_BR
dc.publisher	SpringerOpen	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	Pigment	pt_BR
dc.subject	Complex polymerization method (CPM)	pt_BR
dc.subject	Fractional factorial design	pt_BR
dc.title	Influence of variables on the synthesis of CoFe2O4 pigment by the complex polymerization method	pt_BR
dc.type	article	pt_BR