Abstract
3D printed poly(lactic acid) (PLA) scaffolds surface modified with chitosan (CS) and hydroxyapatite (HA) to produce a novel bioactive composite scaffold is reported. Excellent mechanical properties of PLA, the bioactivity of CS, and osteogenic characteristics of HA are combined to fabricate composite scaffolds using a simple desktop 3D printer. Scaffolds were characterized through attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopy, scanning electron microscopy (SEM), energy dispersive X-ray (EDX) spectroscopy, X-ray diffraction (XRD) and water contact angle measurements before and after modification. Formic acid was used as a solvent to prepare stable CS/HA dispersions and was found to be a suitable solvent for producing PLA/CS/HA composites. Surface properties of modified scaffolds were superior in terms of hydrophilicity and bioactivity, which resulted in enhanced attachment and proliferation of human osteosarcoma cells in vitro compared to the unmodified PLA scaffolds.
| Original language | English |
|---|---|
| Article number | 101515 |
| Number of pages | 9 |
| Journal | Materials Today Communications |
| Volume | 25 |
| DOIs | |
| Publication status | Published - Dec 2020 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2020 Elsevier Ltd
Keywords
- 3D printing
- Bioactive composite scaffolds
- Bone tissue engineering
- Chitosan
- Hydroxyapatite
- PLA
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