NiTi/PMMA Biocomposite: in Situ Polymerization, Microstructure and Mechanical Property

Porous titanium alloys have been used widely in the field of hard tissue prosthesis applications. But there is a critical concern regarding the degradation of mechanical properties with the increase in porosity. A strategy of incorporating porous metal with biomedical polymethyl methacrylate (PMMA)...

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Bibliographic Details
Published in:Transactions of the Indian Institute of Metals 2023-04, Vol.76 (4), p.945-950
Main Authors: Li, Yong-Hua, Li, Jun-Hui
Format: Article
Language:English
Subjects:
Biocompatibility
Biomedical materials
Chemistry and Materials Science
Combustion synthesis
Composite materials
Compressive strength
Corrosion and Coatings
Intermetallic compounds
Materials Science
Mechanical properties
Metal foams
Metallic Materials
Modulus of elasticity
Nickel base alloys
Nickel titanides
Original Article
Polymerization
Polymethyl methacrylate
Porosity
Prostheses
Shape memory alloys
Titanium alloys
Titanium base alloys
Tribology
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Summary:Porous titanium alloys have been used widely in the field of hard tissue prosthesis applications. But there is a critical concern regarding the degradation of mechanical properties with the increase in porosity. A strategy of incorporating porous metal with biomedical polymethyl methacrylate (PMMA) is proposed to ameliorate the mechanical property of metal foam. In this literature, porous NiTi shape memory alloy (SMA) has been fabricated by combustion synthesis. NiTi/PMMA biocomposite has been prepared by soaking the porous NiTi SMA sample in the mixture of monomer MMA solutions and initiator AIBN with weight ratio 100:1 and then evacuating to 0.08 MPa for 1 h followed by polymerization at 319 K in air for 24 h. The permeable porous structure favors the filling of pores with PMMA. The compressive strength of NiTi/PMMA composite has been significantly enhanced compared with that of porous NiTi SMA. The elastic modulus and compressive strength of biocompatible NiTi/PMMA composite match those of bone tissue.
ISSN:0972-2815
0975-1645
DOI:10.1007/s12666-022-02803-2