Bioactive composites consisting of PEEK and calcium silicate powders.
Bioactive bone-repairing materials with mechanical properties analogous to those of natural bone can be obtained through the combination of bioactive ceramic fillers with organic polymers. Previously, we developed novel bioactive microspheres in a binary CaO-SiO2 system produced through a sol-gel process as filler for the fabrication of composites. In this study, we fabricate bioactive composites in which polyetheretherketone is reinforced with 0-50 vol% 30CaO x 70SiO2 (CS) microspheres. The prepared composites reinforced with CS particles form hydroxyapatite on their surfaces in simulated body fluid. The induction periods of hydroxyapatite formation on the composites decrease with increasing amount of CS particles. The mechanical properties of the composites are evaluated by three-point bending test. The composites reinforced with 20 vol% CS particles show 123.5 MPa and 6.43 GPa in bending strength and Young's modulus, respectively.
Kim
Ill Yong
IY
Graduate School of Engineering, Nagoya University, Furo-cho Chikusa, Nagoya 464-8603, Japan. h046107d@mbox.nagoya-u.ac.jp
Sugino
Atsushi
A
Kikuta
Koichi
K
Ohtsuki
Chikara
C
Cho
Sung Baek
SB