Use of micrometric latex beads to improve the porosity of hydroxyapatite obtained by chemical coprecipitation method
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Applied Surface Science
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Hydroxyapatite is one of the most important biomaterials whose application mainly extends to implants
and drug delivery. This work will discuss the changes in the pore size distribution of hydroxyapatite
when there are latex beads present during the synthesis. These changes were monitored using different
techniques: small angle X-ray scattering, X-ray diffraction, thermal gravimetrical analysis, N2 adsorption,
scanning and transmission electron microscopy. Latex beads and hydroxyapatite form a single nanocomposite
with well-distinguished inorganic and organic phases. Latex bead removal in the temperature
range of 300–600 ◦C did not modify the original crystalline structure of hydroxyapatite. However, the
latex beads favored an increase in the adsorption capacity of mesopores at temperatures higher than
their glassy transition (Tg). The main result of this research work consists on the increase of surface area
and pore size distribution obtained after the removal of latex beads template. Latex beads have been
used in a different approach changing the porosity of hydroxyapatite scaffolds not only introducing new
routes for cell integration but also broadening the pore size distribution which can result in a more high
efficiency for drug release in living cells.
Como referenciar
WEBLER, G.D.; RODRIGUES, W.C.; SILVA, A.E.S.; SILVA, A.O.S.; FONSECA, E.J.S.; DEGENHARDT, M.F.S.; OLIVEIRA, C.L.P.; OTUBO, L.; BARROS FILHO, D.A. Use of micrometric latex beads to improve the porosity of hydroxyapatite obtained by chemical coprecipitation method. Applied Surface Science, v. 436, p. 141-151, 2018. DOI: 10.1016/j.apsusc.2017.11.218. Disponível em: http://repositorio.ipen.br/handle/123456789/29029. Acesso em: 20 Mar 2026.
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