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Tape‐casting technique can prepare β‐TCP sheets with uniform thickness and flexibility
Author(s) -
Tanimoto Yasuhiro,
Hayakawa Tohru,
Nemoto Kimiya
Publication year - 2005
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.30185
Subject(s) - materials science , fabrication , composite material , tape casting , slurry , casting , scanning electron microscope , medicine , alternative medicine , pathology
The objective of this study is to propose a new fabrication technology for bone substitutes. In this study, a tape‐casting method was used to prepare flexible β‐tricalcium phosphate (β‐TCP) sheets. A β‐TCP slurry containing a binder and plasticizer was used in a doctor blade system. The β‐TCP sheet obtained by this tape‐casting method was highly flexible, enabling twisting and free‐form shaping. The β‐TCP sheet was approximately 0.21 mm thick. X‐ray diffraction and Fourier transform infrared spectrometry revealed that the structure of the β‐TCP component in the sheet is the same as that of the original β‐TCP powder. Observation by field‐emission scanning electron microscopy showed that the β‐TCP sheet had a flat, microgranular surface. During the early stages, the tensile stress–strain curves of the β‐TCP sheet showed a nonlinear behavior until reaching the point of final fracture. This result was derived from the ductile property of the prepared β‐TCP sheet. In conclusion, a flexible β‐TCP sheet was easily prepared using a tape‐casting technique. Fabrication using tape casting offers the advantages of enabling the preparation of ceramic sheets with precise thickness and not requiring expensive fabrication facilities. © 2004 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 73B: 157–163, 2005