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three-dimensionally perforated Calcium Phosphate Ceramics

Journal of Wuhan University of Technology(Materials Science) 2005年第B12期20卷 223-225页

作者： Atsuo Ito T Sakurai Y Sogo M Ikeuchi H Ohgushi T Mutsuzaki Institute for Human Science and Biomedical Engineering National Institute of Advanced Industrial Science and Technology Central 6 1-1-1 Higashi Tsukuba 305-8566 Japan Research Institute for Cell Engineering National Institute of Advanced Industrial Science and TechnologyAmagasaki Site 3-11-46 Nakouji Amagasaki Hyogo 661-0974 Japan Department of Orthopedic Surgery University of Tsukuba 1-1-1 Tennodai Tsukuba 305-8571 Japan

Porous calcium phosphate ceramics were produced by compression molding using a special mold followed by sintering. The porous calcium phosphate ceramics have three-dimensional and penetrated open pores 380-400μm in diacneter spaced at intervals of 200μm. The layers of the linear penetration pores alternately lay perpendicular to pore direction. The porosity was 59%-65% . The Ca/ P molar ratios of the porous calcium phos phate ceramics range from 1.5 to 1.85. A binder cantaining methyl cellulose was most effective for preparing the powder compact among vinyl acetate, polyvinyl alcohol, starch, stearic acid, methyl cellulose and their mixtures . Stainless steel, polystyrene, nylon and bamboo were used as the long columnar dies for the penetrated open pores. When polystyrene, nylon and bamboo were used as the long columnar male dies, the dies were burned oat during the sintering process. Using stainless steel as the male dies with the removal of the dies before heat treatment resulted in a higher level of densification of the calcium phosphate ceramic.

关键词： calcium phosphate porous ceramic three-dimensionally perforated tissue engineering scaffold tricalcium phosphate

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