Over the recent years, nanometric hydroxyapatite (HA) has gained interest as constituent of hybrid systems for bone scaffold fabrication, due to its biomimicry and biocompatibility. In this study, rod-like nano-HA particles were introduced in a type I collagen matrix to create a composite mimicking the bone composition. HA nanorods (40−60 nm ×20 nm) were synthesised by hydrothermal method involving the use of an ammonium-based dispersing agent (Darvan 821-A) and fully characterised. The homogeneous dispersion of HA nanoparticles throughout the final hybrid formulation was achieved through their suspension in a collagen solution in presence of Darvan 821-A. The resulting homogeneous collagen/nano-HA suspension proved to be suitable for extrusion printing applications, showing shear thinning and sol-gel transition upon simil-physiological conditions. Furthermore, mesh-like structures were printed in a gelatine-supporting bath by means of a commercial bioprinter further demonstrating the potential of the designed hybrid system for the fabrication of 3D bone-like scaffolds.
Synthesis and incorporation of rod-like nano-hydroxyapatite into type I collagen matrix: a hybrid formulation for 3D printing of bone scaffolds / MONTALBANO, GIORGIA; MOLINO, GIULIA; FIORILLI, SONIA LUCIA; VITALE BROVARONE, CHIARA. - In: JOURNAL OF THE EUROPEAN CERAMIC SOCIETY. - ISSN 0955-2219. - ELETTRONICO. - (2020).
|Titolo:||Synthesis and incorporation of rod-like nano-hydroxyapatite into type I collagen matrix: a hybrid formulation for 3D printing of bone scaffolds|
|Data di pubblicazione:||2020|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/j.jeurceramsoc.2020.02.018|
|Appare nelle tipologie:||1.1 Articolo in rivista|
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