Biopolymer-based polycaprolactone-hydroxyapatite scaffolds for bone tissue engineering
Aminatun, Tri Suciati, Yessie Widya Sari, Mona Sari, Kartika Anggraini Alamsyah, Wulan Purnamasari, Yusril Yusuf
Abstract
This work synthesized Hydroxyapatite (HA) from common cockle shells using a precipitation method and fabricated nanofiber scaffolds of polycaprolactone (PCL)-HA composites with combinations of several polymers (i.e., gelatin, chitosan, and collagen) using electrospinning. The synthesized HA had a small agglomerate shape, solid structure, and few interconnected micropores. Energy Dispersive X-Ray Spectroscopy (EDS) analysis revealed that the synthesized HA exhibited a Ca/P molar ratio of 1.68. All nanofiber samples were nontoxic with cell viability values of 70.46–91.78%. The PCL-HA-Gelatin nanofiber was the best mechanical properties of the scaffold with the high values of tensile strength, modulus of elasticity, and breaking-point elongation at (9.80 ± 1.36) MPa, (0.81 ± 0.09) MPa, and (61.5 ± 7.75) %, respectively. There was no significant difference in the average cell viability of the samples. Nanofiber scaffolds of PCL-HA polymer have the potential for bone tissue engineering applications by satisfying their mechanical property and cytotoxicity assay criteria.