Physical chemical and thermoanalytical characterization of cements based on synthetic hydroxyapatite.
The synthesis and characterization of cements based on hydroxyapatite are reported. The cements were prepared by mixing a solid phase formed by hydroxyapatite (HAP), gypsum, sodium alginate (NaAlg) and N,N-poly-vinil-pirrolidone with a liquid phase containing potassium sulfate and potassium phosphat...
| Publicado en: | Revista CENIC Ciencias Quimicas Vol. 37; no. 2; pp. 63 - 69 |
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| Autores principales: | , , , , |
| Formato: | Artículo |
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Centro Nacional de Investigaciones Cientificas
2006
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=lth&AN=27617686&site=ehost-live header: @attributes: shortDbName: lth uiTerm: 27617686 longDbName: MedicLatina uiTag: AN controlInfo: bkinfo: jinfo: jid: 10158553 UF0 jtl: Revista CENIC Ciencias Quimicas issn: 10158553 maglogo: N pubinfo: dt: 2006 vid: 37 iid: 2 pid: 21205 pub: Centro Nacional de Investigaciones Cientificas artinfo: ui: 27617686 ppf: 63 ppct: 6 formats: fmt: @attributes: type: P size: 363KB tig: atl: Physical chemical and thermoanalytical characterization of cements based on synthetic hydroxyapatite. aug: au: Fuentes Estévez, Gastón Rojas Cervantes, María Luisa Delgado García-Menocal, José Ángel Llópiz Yurell, Julio César Peón Avés, Eduardo affil: Biomaterials Center, University of Havana, P.O. Box 6130, Postal Code 10600, Havana, Cuba Dept. of Inorganic and Technical Chemistry, Faculty of Sciences, UNED, Madrid 28040, Spain Institute of Materials and Reactives, University of Havana, Postal Code 10400, Havana, Cuba su: Adhesive cements Hydroxyapatite coating Biomedical materials Gypsum Potassium phosphates Thermal properties sug: subj: Adhesive cements Hydroxyapatite coating Biomedical materials Gypsum Potassium phosphates Thermal properties keyword: biomaterial cement characterization hydroxyapatite biomaterial caracterización cementos hidroxiapatita ab: The synthesis and characterization of cements based on hydroxyapatite are reported. The cements were prepared by mixing a solid phase formed by hydroxyapatite (HAP), gypsum, sodium alginate (NaAlg) and N,N-poly-vinil-pirrolidone with a liquid phase containing potassium sulfate and potassium phosphate. The samples so prepared as well as the major components (hydroxyapatite and gypsum) were characterized by x-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric and differential thermal analysis. The cements so prepared, as well as the major components (hydroxyapatite and gypsum) were characterized by different techniques. The results of FTIR and XRD confirm the high purity and cristallinity of the HAP synthesized and used as raw material for the synthesis of the cements. The relative intensities in the FTIR spectra of the bands assigned to PO groups and water change with the composition of the cement. FTIR of cements also indicate a reduction in the cristallinity degree of the HAP during the cement formation, confirmed by XRD results, and the appear of new bands assigned to the vibration mode of carboxylate groups from the polymers used. The thermal behaviour of the cements is also affected by the composition of the cements. Se reporta la síntesis y caracterización de cementos basados en hidroxiapatita. Los cementos fueron preparados mezclando una fase sólida formada por hidroxiapatita, yeso, alginato de sodio y N-polivinil-2-pirrolidona con una fase líquida que contenía sulfato y fosfato de potasio. Los cementos y sus componentes mayoritarios fueron caracterizados por diferentes técnicas. Las intensidades relativas en los espectros FTIR de las bandas asignadas a los grupos PO y al agua, cambian con la composición del cemento. Los espectros infrarrojos de los cementos también indican una reducción del grado de cristalinidad de la hidroxiapatita durante la formación del cemento, confirmada por los resultados de RX y la aparición de nuevas bandas asignadas al modo de vibración de grupos carboxilatos como resultado de los polímeros empleados. El comportamiento térmico de los cementos se ve también alterado por la composición de los cementos. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y custom: Copyright of Revista CENIC Ciencias Quimicas is the property of Centro Nacional de Investigaciones Cientificas and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. item: Revista CENIC Ciencias Quimicas holder: Centro Nacional de Investigaciones Cientificas dt: @attributes: year: 2006 holdings: @attributes: islocal: N |
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