Micromechanical Measurements and Biocompatibility of the High Porosity Ti Scaffold Made with Saccharose as a Space Holder


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Abstract

The paper presents mechanical properties of the porous Ti scaffold made with saccharose as a space holder. The Ti scaffolds had the porosity of 50, 60 and 70% and were made using 100 and 325 mesh Ti as a scaffold material. The pores were established using saccharose spherical space holder particles of 0.7–0.9 mm in diameter. The local mechanical properties of the Ti scaffold have been measured using nanoindenter. Several loading-unloading characteristics of the thin scaffold walls in the microscale have been measured. It has been observed that Ti scaffolds have very high mechanical properties measured in the microscale that are correlated with partial scaffold oxidation and a formation of TiO2, which took place during the production stages. The scaffold is composed mainly of Ti oxide and the structure has been identified by XRD as well as XPS. The highest mechanical properties have scaffolds composed of 100 mesh Ti particles, compared to 325 mesh Ti. The microscale tests measurements are rather slightly affected by the pore presence and are under influence of Ti particles. The MTT test shows slightly higher proliferation of NHost cells on porous Ti scaffold in comparison to the reference Ti sample.

About the authors

J. Jakubowicz

Poznan University of Technology, Institute of Materials Science and Engineering, Jana Pawla II no 24

Author for correspondence.
Email: jaroslaw.jakubowicz@put.poznan.pl
Poland, Poznan, 61-138

G. Adamek

Poznan University of Technology, Institute of Materials Science and Engineering, Jana Pawla II no 24

Email: jaroslaw.jakubowicz@put.poznan.pl
Poland, Poznan, 61-138

P. Siwak

Poznan University of Technology, Institute of Mechanical Technology

Email: jaroslaw.jakubowicz@put.poznan.pl
Poland, Poznan, 60-965

K. Palka

Lublin University of Technology, Department of Materials Engineering

Email: jaroslaw.jakubowicz@put.poznan.pl
Poland, Lublin, 20-618

M. U. Jurczyk

Division of Mother’s and Child’s Health, Poznan University of Medical Sciences

Email: jaroslaw.jakubowicz@put.poznan.pl
Poland, Poznan, 60-535

P. K. Wirstlein

Department of Gynecology and Obstetrics, Division of Reproduction,
Poznan University of Medical Sciences

Email: jaroslaw.jakubowicz@put.poznan.pl
Poland, Poznan, 60-535

M. Pilch

University of Silesia, Institute of Physics

Email: jaroslaw.jakubowicz@put.poznan.pl
Poland, Katowice, 40-007

M. Dewidar

Kafrelsheikh University, Department of Mechanical Engineering

Email: jaroslaw.jakubowicz@put.poznan.pl
Egypt, Kafr El Sheikh

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