Porous bioceramics reinforced by coating gelatin.
Porous bioceramics with high porosity for bone tissue engineering were fabricated by the foam impregnation technique, but their mechanical strength was poor, only a mean compressive strength of 1.04+/-0.15 MPa and an mean elastic modulus of 0.1 GPa. In order to reinforce porous ceramics, the ceramic samples were immersed in 5% gelatin solution and gelatin coatings were formed on the inter-surface of their pores. It was found that the mean compressive strength value and the mean elastic modulus value of porous samples coated with gelatin were improved to 5.17+/-0.17 MPa and 0.3 GPa respectively without sacrificing their porosity greatly. Moreover composite samples were not as fragile as sintered ceramics. The results indicated that the gelatin coatings on the inter-surface of pores reinforced porous bioceramics effectively.
Liu
Bin
B
School of Materials Science and Engineering, Southeast University, Jiangning District, Nanjing, 211189, China.
Lin
Pinghua
P
Shen
Yan
Y
Dong
Yinsheng
Y
D002516:Ceramics / Q000138:chemical synthesis* / Q000737:chemistry; D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D019245:Compressive Strength; D004548:Elasticity; D005780:Gelatin / Q000737:chemistry* / Q000494:pharmacology; D008422:Materials Testing; D016062:Porosity; D013499:Surface Properties
D020099:Coated Materials, Biocompatible; D005780:Gelatin
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