TY - JOUR
T1 - Static mechanical properties of hydroxyapatite (HA) powder-filled acrylic bone cements
T2 - Effect of type of HA powder
AU - Morejón, Lizette
AU - Mendizábal, Alonso Eduardo
AU - García-Menocal, José Angel Delgado
AU - Ginebra, María Pau
AU - Aparicio, Conrado
AU - Mur, Francisco Javier Gil
AU - Marsal, Montserrat
AU - Davidenko, Natalia
AU - Ballesteros, María E.
AU - Planell, Josep Anton
PY - 2005/2/15
Y1 - 2005/2/15
N2 - This work reports on the effect of the amount (0, 10, and 30 wt %) and type of HA powder incorporated into an acrylic bone cement on the tensile properties, compression properties, and fracture toughness. The three different types of HA powders used were synthesized in the laboratory and coated with a silane agent prior to incorporation into the cement powder, and differed in particle size, water content, surface area, and crystallinity. It was found that the inclusion of any type of HA powder led to an increase in the tensile modulus (ET), but all the other mechanical properties of the cement decreased (relative to the values of the unfilled cement). The increase in ET is attributed to the good adhesion between the filler and the cement matrix, which is due to the silane coating agent. The decrease in the other mechanical properties may be a consequence of HA powder agglomeration and porosity. Hydroxyapatite morphology and crack-growth mechanisms were analyzed by scanning electronic microscopy (SEM).
AB - This work reports on the effect of the amount (0, 10, and 30 wt %) and type of HA powder incorporated into an acrylic bone cement on the tensile properties, compression properties, and fracture toughness. The three different types of HA powders used were synthesized in the laboratory and coated with a silane agent prior to incorporation into the cement powder, and differed in particle size, water content, surface area, and crystallinity. It was found that the inclusion of any type of HA powder led to an increase in the tensile modulus (ET), but all the other mechanical properties of the cement decreased (relative to the values of the unfilled cement). The increase in ET is attributed to the good adhesion between the filler and the cement matrix, which is due to the silane coating agent. The decrease in the other mechanical properties may be a consequence of HA powder agglomeration and porosity. Hydroxyapatite morphology and crack-growth mechanisms were analyzed by scanning electronic microscopy (SEM).
KW - Acrylic bone cement
KW - Compressive properties
KW - Fracture toughness
KW - Hydroxyapatite
KW - Tensile properties
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U2 - 10.1002/jbm.b.30166
DO - 10.1002/jbm.b.30166
M3 - Article
C2 - 15529327
AN - SCOPUS:19944431615
SN - 0021-9304
VL - 72
SP - 345
EP - 352
JO - Journal of Biomedical Materials Research - Part B Applied Biomaterials
JF - Journal of Biomedical Materials Research - Part B Applied Biomaterials
IS - 2
ER -