INFLUENCE OF AGING TIME IN OBTAINING BIPHASIC CALCIUM PHOSPHATE (BCP) CERAMICS BY SOL-GEL METHOD

• DOI: 10.22533/at.ed.02619030423

• Palavras-chave: Atena

• Keywords: Biphasic calcium phosphate ceramics; sol-gel synthesis; aging time; crystallinity; biomaterials.

• Abstract:

  Calcium phosphate ceramics

  have shown a wide range of applicability in

  orthopedic and dental areas, substituting

  or repairing lost or damaged body parts.

  Specifically, biphasic calcium phosphates (BCP)

  get a special attention due to their controlled

  bioactivity and equilibrium, between resorption/

  solubilization processes, when in contact with

  body fluids. The present work aimed to study

  the influence of aging time in obtaining of BCP

  by sol-gel method, composed of hydroxyapatite

  and β-tricalcium phosphate phases. The

  samples were aged in oven for 24, 48, 72 and

  96 hours at 60ºC and characterized by Fourier

  Transform Infrared Spectroscopy and X-ray

  Diffraction techniques. According to the results,

  the aging time played a fundamental role on

  the calcium phosphates phases and on the

  crystallinity of samples. Under such conditions,

  the optimal routes for obtaining BCP were those

  corresponding to the aging times of 24 and 72

  hours. However, the sample aged for 72 hours

  presented greater crystallinity in comparison

  with the sample aged for 24 hours, evincing the

  influence of aging time on BCP.

• Número de páginas: 15