Abstract
We herein demonstrate the utility of the rapid direct deposition of a titanium hydride (TiH2) paste for the production of porous titanium (Ti) scaffolds with tailored porous structures and mechanical properties. In particular, methylcellulous (MC) polymer was used as the binder, since it can rapidly solidify in acetone through solvent extraction, thus enabling deposited green filaments to have high structural integrity. In addition, TiH2 powder was used as the Ti source because of its smaller particle size than commercial Ti powder and conversion to Ti metal through a two-step dehydrogenation process. The uses of fine TiH2 powder and MC binder allowed for the creation of three-dimensionally interconnected periodic macrochannels with sizes of ∼165 ± 14 × 167 ± 25 μm. The produced Ti scaffold had a porosity of ∼42 ± 7 vol % and a reasonably high compressive strength of 48 ± 15 MPa. In addition, the porosity and mechanical properties of porous Ti scaffolds could be tailored simply by adjusting the initial distances between deposited green TiH2/MC filaments. All of the porous Ti scaffolds produced with various porosities showed good in vitro biocompatibility.
| Original language | English |
|---|---|
| Journal | Materials Chemistry and Physics |
| DOIs | |
| Publication status | Accepted/In press - 2015 Jan 21 |
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Keywords
- Biomaterials
- Mechanical properties
- Metals
- Powder metallurgy
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
Cite this
Rapid direct deposition of TiH2 paste for porous Ti scaffolds with tailored porous structures and mechanical properties. / Ahn, Min Kyung; Lee, Jung Bin; Koh, Young-Hag; Kim, Hyoun Ee.
In: Materials Chemistry and Physics, 21.01.2015.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Rapid direct deposition of TiH2 paste for porous Ti scaffolds with tailored porous structures and mechanical properties
AU - Ahn, Min Kyung
AU - Lee, Jung Bin
AU - Koh, Young-Hag
AU - Kim, Hyoun Ee
PY - 2015/1/21
Y1 - 2015/1/21
N2 - We herein demonstrate the utility of the rapid direct deposition of a titanium hydride (TiH2) paste for the production of porous titanium (Ti) scaffolds with tailored porous structures and mechanical properties. In particular, methylcellulous (MC) polymer was used as the binder, since it can rapidly solidify in acetone through solvent extraction, thus enabling deposited green filaments to have high structural integrity. In addition, TiH2 powder was used as the Ti source because of its smaller particle size than commercial Ti powder and conversion to Ti metal through a two-step dehydrogenation process. The uses of fine TiH2 powder and MC binder allowed for the creation of three-dimensionally interconnected periodic macrochannels with sizes of ∼165 ± 14 × 167 ± 25 μm. The produced Ti scaffold had a porosity of ∼42 ± 7 vol % and a reasonably high compressive strength of 48 ± 15 MPa. In addition, the porosity and mechanical properties of porous Ti scaffolds could be tailored simply by adjusting the initial distances between deposited green TiH2/MC filaments. All of the porous Ti scaffolds produced with various porosities showed good in vitro biocompatibility.
AB - We herein demonstrate the utility of the rapid direct deposition of a titanium hydride (TiH2) paste for the production of porous titanium (Ti) scaffolds with tailored porous structures and mechanical properties. In particular, methylcellulous (MC) polymer was used as the binder, since it can rapidly solidify in acetone through solvent extraction, thus enabling deposited green filaments to have high structural integrity. In addition, TiH2 powder was used as the Ti source because of its smaller particle size than commercial Ti powder and conversion to Ti metal through a two-step dehydrogenation process. The uses of fine TiH2 powder and MC binder allowed for the creation of three-dimensionally interconnected periodic macrochannels with sizes of ∼165 ± 14 × 167 ± 25 μm. The produced Ti scaffold had a porosity of ∼42 ± 7 vol % and a reasonably high compressive strength of 48 ± 15 MPa. In addition, the porosity and mechanical properties of porous Ti scaffolds could be tailored simply by adjusting the initial distances between deposited green TiH2/MC filaments. All of the porous Ti scaffolds produced with various porosities showed good in vitro biocompatibility.
KW - Biomaterials
KW - Mechanical properties
KW - Metals
KW - Powder metallurgy
UR - http://www.scopus.com/inward/record.url?scp=84979470015&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84979470015&partnerID=8YFLogxK
U2 - 10.1016/j.matchemphys.2016.03.033
DO - 10.1016/j.matchemphys.2016.03.033
M3 - Article
AN - SCOPUS:84979470015
JO - Materials Chemistry and Physics
JF - Materials Chemistry and Physics
SN - 0254-0584
ER -