Development of carbon nanotube-ceramics composites as high performance biomaterials

2014 Fiscal Year Final Research Report

• Project/Area Number: 23360303
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Inorganic materials/Physical properties
• Research Institution: Shinshu University
• Principal Investigator: TARUTA Seiichi 信州大学, 学術研究院工学系, 教授 (00217209)
• Co-Investigator(Kenkyū-buntansha): SAITO Naoto 信州大学, 学術研究院保健学系, 教授 (80283258)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: バイオマテリアル / カーボンナノチューブ / アルミナ / 複合体 / 微構造制御 / 骨伝導性 / 機械的性質 / 発泡体

Outline of Final Research Achievements

In order to develop the long-operating life artificial joints, carbon nanotubes (CNTs) were combined with alumina ceramics as reinforcement. We found that to enhance the fracture toughness of the composites, it was necessary not only that thinner CNTs having a few defects were dispersed uniformly in the composites but also that the microstructures of the composites were finer. Also, it is known that alumina ceramics are originally bioinert materials. So we found that alumina ceramics, which were ground coarsely and then heated with conc. phosphoric acid, had possibility to show bioactivity. The bioactivity is required property to use the alumina ceramics as artificial bone. Furthermore, in order to apply CNTs as scaffolds to regenerate living bone, CNTs/glass foam composites were fabricated. The foam composites in which CNTs were dispersed relatively uniform in the walls of pores were obtained.

Free Research Field

無機材料工学