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Self-assembled structures of hydroxyapatite in the biomimetic coating on a bioinert ceramic substrate.
Chakraborty, Jui; Sarkar, Soumi Dey; Chatterjee, Saradiya; Sinha, Mithlesh Kumar; Basu, Debabrata.
Afiliação
  • Chakraborty J; Bioceramics and Coating Division, Central Glass and Ceramic Research Institute, 196 Raja S.C. Mullick Road, Kolkata, West Bengal, India. jui@cgcri.res.in
Colloids Surf B Biointerfaces ; 66(2): 295-8, 2008 Oct 15.
Article em En | MEDLINE | ID: mdl-18693089
The tribological properties of alumina ceramic are excellent due in part to a high wettability because of the hydrophilic surface and fluid film lubrication that minimizes the adhesive wear. Such surfaces are further modified with bioactive glass/ceramic coating to promote direct bone apposition in orthopedic applications. The present communication reports the biomimetic coating of calcium hydroxyapatite (HAp) on dense (2-3% porosity) alumina (alpha-Al(2)O(3)) substrate (1cm x 1cm x 0.5 cm), at 37 degrees C. After a total period of 6 days immersion in simulated body fluid (SBF), at 37 degrees C, linear self-assembled porous (pore size: approximately 0.2 microm) structures (length: approximately 375.39 microm and width: 5-6 microm) of HAp were obtained. The phenomenon has been demonstrated by self-assembly and diffusion-limited aggregation (DLA) principles. Structural and compositional characterization of the coating was carried out using SEM with EDX facility, XRD and FT-IR data.
Assuntos

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Cerâmica / Durapatita / Materiais Revestidos Biocompatíveis / Materiais Biomiméticos Idioma: En Ano de publicação: 2008 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Cerâmica / Durapatita / Materiais Revestidos Biocompatíveis / Materiais Biomiméticos Idioma: En Ano de publicação: 2008 Tipo de documento: Article