Mechanical effect of calcium polyphosphate fiber on reinforcing calcium phosphate bone cement composites
10.3969/j.issn.1673-8225.2009.38.015
- VernacularTitle:聚磷酸钙纤维增强增韧磷酸钙骨水泥的力学效应
- Author:
Lixin XU
;
Xueting SHI
;
Yanping WANG
;
Zongli SHI
- Publication Type:Journal Article
- From:
Chinese Journal of Tissue Engineering Research
2009;13(38):7474-7476
- CountryChina
- Language:Chinese
-
Abstract:
AIM: To prepare α-tricalcium phosphate (α-TCP)/calcium polyphosphate (CPP) fiber and to study the feasibility of CPP fiber to reinforce calcium phosphate bone cement composites. METHODS: Firstly,α-TCP powder was synthesized using chemical sediment method. Secondly, the α-TCP was mixed with CPP fiber according to different contents and lengths. Finally, bone cement was tempered with firming agent. Solidification time and mechanical property of the samples were measured. Microstructure of hardened sample was observed with scanning electron microscope. RESULTS: When the amount of CPP fibers was 10% and the length was 2 mm, the compressive strength reached 62.5 MPa and the rupture strength reached 12.4 MPa. Scanning electron microscope suggested that CPP fibers with great associativity were well distributed in bone cement. After immersing in Ringer fluid for two months, the CPP fibers did not biodegrade obviously and still had certain function to increase strength and toughness. CONCLUSION: To a certain extent, the CPP fiber can increase strength and toughness of bone cement. Furthermore, α-TCP/CPP composites have good mechanical properties and biocompatibility.
