Biomimetic apatite formation on Ultra-High Molecular Weight Polyethylene (UHMWPE) using modified biomimetic solution

Autor(es)

Aparecida, Anahi H. ^[1] ; Fook, Marcus V. L. ^[2] ; Guastaldi, Antonio C. ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ UNESP, Chem Inst Araraquara, Biomat Grp, Dept Phys Chem, Araraquara - Brazil

^[2] Campina Grande Fed Univ UFCG, Dept Mat Engn, Campina Grande - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE; v. 20, n. 6, p. 1215-1222, JUN 2009.
• Citações Web of Science: 23

Resumo

Modifications were performed on a biomimetic solution (SBF), according to previous knowledge on the behavior of ions present in its composition, in order to obtain apatite coatings onto Ultra-High Molecular Weight Polyethylene (UHMWPE) without having to use polymer pre-treatments that could compromise its properties. UHMWPE substrates were immersed into a 30% H(2)O(2) solution for a 24-h period and then submitted to a biomimetic coating method using standard SBF and two other modified SBF solutions. Apatite coatings were only obtained onto UHMWPE when the modified SBF solutions were used. Based on these results, apatite coatings of biological importance (calcium-deficient hydroxyapatite-CDHA, amorphous calcium phosphate-ACP, octacalcium phosphate-OCP, and carbonated HA) can be obtained onto UHMWPE substrates, allowing an adequate conciliation between bonelike mechanical properties and bioactivity. (AU)

• Processo FAPESP: 06/60436-3 - Desenvolvimento de estruturas porosas de polietileno de ultra alto peso molecular (PEUAPM) recobertas com apatitas para substituição e regeneração óssea
• Beneficiário: Anahi Herrera Aparecida Thomazini
• Modalidade de apoio: Bolsas no Brasil - Doutorado