Related Experiment Video
Updated: Mar 2, 2026
11:31
Repair of a Critical-sized Calvarial Defect Model Using Adipose-derived Stromal Cells Harvested from Lipoaspirate
Published on: October 31, 2012
16.5K
Freeze-casting for PLGA/carbonated apatite composite scaffolds: Structure and properties
M Schardosim1, J Soulié2, D Poquillon2
1CIRIMAT, Université de Toulouse, CNRS, INPT, UPS, ENSIACET, 4 allée Emile Monso, CS 44362, 31030 Toulouse cedex 4, France; PUCRS, GEPSI-LMN, Porto Alegre, Brazil.
Summary
This study fabricated porous PLGA-biomimetic carbonated apatite composite scaffolds. Optimizing the apatite ratio enhanced mechanical properties and limited degradation, suggesting improved biological performance.
Area of Science:
- Biomaterials Science
- Tissue Engineering
Background:
- Poly(lactic-co-glycolic) acid (PLGA) is a widely used biodegradable polymer.
- Biomimetic carbonated apatite enhances bone regeneration.
- Developing composite scaffolds with controlled properties is crucial for tissue engineering.
Purpose of the Study:
- To fabricate three-dimensional porous PLGA-biomimetic carbonated apatite composite scaffolds.
- To investigate the influence of apatite content on scaffold properties.
- To optimize scaffold composition for enhanced mechanical and degradation characteristics.
Main Methods:
- Freeze-casting technique using dimethyl carbonate as a solvent.
- Fabrication of PLGA-biomimetic carbonated apatite composites.
- Characterization using SEM, mercury porosimetry, and X-ray microtomography.
Main Results:
- Apatite content significantly impacts scaffold architecture, cohesion, mechanical strength, and degradation.
- An optimal apatite ratio was identified, balancing rigidity and cohesion.
- Higher apatite content reduced PLGA degradation and increased scaffold hydrophilicity.
Conclusions:
- The apatite ratio is a critical factor in tuning PLGA-biomimetic carbonated apatite composite scaffold properties.
- Optimized scaffolds exhibit improved mechanical integrity and controlled degradation.
- Enhanced hydrophilicity and bioactivity suggest potential for improved bone tissue regeneration.
