Nanocrystalline hydroxyapatite-polyaspartate composites.
Biomed Mater Eng
; 14(4): 573-9, 2004.
Article
em En
| MEDLINE
| ID: mdl-15472404
ABSTRACT
The direct synthesis of hydroxyapatite-poly-L-aspartic acid (HA-PASP) nanocrystals has been carried out in presence of increasing amounts of PASP in solution up to 56 mmol/l. WAXS, TEM, TGA, IR and chemical analyses were used to characterize the structure, morphology and composition of the products. PASP is quantitatively incorporated into HA crystals, provoking a reduction of the coherent length of the crystalline domains. Furthermore, composite crystals display a greater length/width ratio with respect to the control HA crystals, and show a remarkable trend towards aggregation. The broadening of the X-ray diffraction reflections indicate a reduction of the coherent length along the long dimension 002 and the cross section 310 of the apatite crystals. The comparison between the morphological and structural data allows to suggest a specific interaction between PASP and HA structure.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Peptídeos
/
Materiais Biocompatíveis
/
Durapatita
/
Cristalização
/
Nanoestruturas
Tipo de estudo:
Evaluation_studies
Idioma:
En
Revista:
Biomed Mater Eng
Assunto da revista:
BIOTECNOLOGIA
/
ENGENHARIA BIOMEDICA
Ano de publicação:
2004
Tipo de documento:
Article
País de afiliação:
Itália