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Materials-Metals 2017
Notes:
Page 41
November 16-17, 2017 Paris, France
13th Annual Conference on
Materials Science, Metal and Manufacturing
Journal of Materials Science and Nanotechnology
Volume 1 Issue 2
3D printing technique using photo-curable
ceramic suspension for porous bio-ceramic
scaffolds
Jungbin Lee
Korea university, South Korea
In this study, CaP (calcium phosphate) comprising of
hydroxyapatite (HA) and β-tricalcium phosphate (β-TCP)
was mixed with HDDA (1,6-Hexanediol diacrylate) which is
a photo-curable monomer. The suspension contains a high
content of ceramic (50 vol% or more) and to have flowability
applicable to 3D printing, Decalin (Decahydronaphthalene,
diluent) was added. In the case of diluent, as the content
increases,theshrinkagedecreasesandtheshapereproducibility
increases, but the specific percent of the monomer in ceramic
suspension is reduced, the strength of green body is lowered,
so the composition was optimized for the green body to have
sufficient strength. The ceramic/monomer suspension has a
suitable viscosity for 3D printing (Tape-casting principle).
The content of photo initiator (P.P.O.) and exposure time
were evaluated using photo-DSC, finally, the photo curing
behavior was optimized. Porous ceramic scaffolds produced
by suspension with ceramic content of 45 vol% and 50 vol%
were sintered at 12500C and evaluated. As a result of observing
the microstructure using scanning electron microscope, the
sintered body was maintained well without deformation or
defects, as the content of ceramic increased, the micro pores
was decreased, and it was densified. The result of three point
bending test, all group (45 vol% & 50 vol%) had the same
porosity (55±0.13 vol%), as the content of ceramic increased,
it had highmechanical strength. We produced porous calcium
phosphate scaffolds using the uniformly-mixed suspension
with high content of ceramic and the problem of precipitation
of ceramic particles in the suspension was solved by tape-
casting technique. It is expected to be used not only for
ceramic scaffold with high quality, but also for various fields
(structure, environment and energy) using ceramic materials.
Biography
Jungbin Lee is a PhD candidate in the Department of Bio-convergence
engineering from Korea University, South Korea. He is interested in biomedical
3D printing techniques and biomaterials for tissue regeneration.
Jungbin Lee, Mater Sci Nanotechnol 2017, 1:2