Effect of terminal functional groups of silane layers on adhesive strength between biomedical Ti-29Nb-13Ta-4.6Zr alloy and segment polyurethanes |
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| Authors: | Junko Hieda Mitsuo Niinomi Masaaki Nakai Hiroyuki Kamura Harumi Tsutsumi Takao Hanawa |
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| Affiliation: | 1. Department of Biomaterials Science, Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;2. Graduate Student, Department of Medical Materials, Graduate School of Biomedical Engineering, Tohoku University, 6-6 Aoba, Aramaki Aza, Aoba-ku, Sendai 980-8579, Japan;3. Department of Metals, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-surugadai, Chiyoda-ku, Tokyo 101-0062, Japan |
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| Abstract: | Composite materials that consisted of a biomedical β-type titanium alloy, Ti-29Nb-13Ta-4.6Zr alloy (TNTZ) with low Young's modulus and segment polyurethane (SPU) have been fabricated for application in biomedical devices. The effects of different kinds of terminal functional groups and the thickness of the silane layers (SIL) on the adhesive strength between TNTZ and SPU were investigated by means of shear bonding tests. The following silane coupling agents were employed in this study: 3-methacryloxypropyltrimethoxysilane (γ-MPTS), aminopropyltriethoxysilane (APS), and 3-mercaptopropyltrimethoxysilane (γ-MPS). Furthermore, the shear bonding strength of the TNTZ/SIL/SPU interface was also characterized after immersion in water for 30 d. |
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| Keywords: | β-type titanium alloy Adhesive strength Silane coupling agent |
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