3d Printing of Biodegradable Poly (Butylene Adipate – Co – Terephthalate) / Hydroxyapatite Nanocomposites
Date
2020
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Department of Chemestry
Abstract
In this work, the hydroxyapatite (HA) biomaterial from a bio-waste namely the
buffalo bone was prepared in simple and environmentally friendly way. It was
characterized by Fourier Transform InfraRed (FTIR), X-Ray Diffraction
(XRD), Energy Dispersive X-Ray (EDX) and Scanning Electron Microscope
(SEM) analyses. The average sizes of the nanoparticles were found in the range
8-41 nm as calculated by Debye-Sherrer’s formula. FTIR spectra confirmed the
presence of major functional groups (PO4
vi
3-
and OH
-
) in prepared HA samples,
with small additional peaks of carbonate ion (CO3
2-
). The SEM micrograph
showed the formation of small rod-like crystals in the agglomerated particles
were presented in as-dried HA powders with size ranges from 1.75 to 2.72 μm.
In addition, the micrographs show morphologies for all samples with fine
particles and pore size details ranges from 31.3nm to 101nm provides good
agreement to be used in a biomedical application.
To make the nanocomposite, HA was macroscopically uniformly distributed
over poly(butylene adipate-co-terephthalate) (PBAT) by solvent casting method
with the help of magnetic stirrer. By using nanocomposite, the filament for 3D
printer was prepared by Noztek machine. Finally, button like structure was
prepared by using 3D printer and it was investigated by water adsorption,
Biodegradibility and anti-microbial test. The addition of HA brought
improvements in stiffness of PBAT, due to high interactions between the
carbonyl groups of the polymer matrix and the hydroxyl groups of HA. As the
percentage of HA in composite increased, the water absorption percentage of
nano-composite also increased. Also, degradation test showed that weight loss
percentage gone to decrease with increased percentage of HA in composite.
Therefore, this biomaterial has great potential for applications in regenerative
medicine as a support for bone growth.
Keywords: Hydroxyapatite (HA), Crystallinity, Porous, 3D Printing, Solvent
Casting, Biodegradability, Water Absorption, Hydrophilicity
Description
Keywords
Hydroxyapatite (HA), Crystallinity, 3D Printing, Biodegradability