Direct Ink Writing of Biocompatible Nanocellulose and Chitosan Hydrogels for Implant Mesh Matrices.
Rubina AjdaryGuillermo ReyesJani KuulaEija Raussi-LehtoTomi S MikkolaEsko KankuriOrlando J RojasPublished in: ACS polymers Au (2021)
Direct ink writing via single or multihead extrusion is used to synthesize layer-by-layer (LbL) meshes comprising renewable polysaccharides. The best mechanical performance (683 ± 63 MPa modulus and 2.5 ± 0.4 MPa tensile strength) is observed for 3D printed structures with full infill density, given the role of electrostatic complexation between the oppositely charged components (chitosan and cellulose nanofibrils). The LbL structures develop an unexpectedly high wet stability that undergoes gradual weight loss at neutral and slightly acidic pH. The excellent biocompatibility and noncytotoxicity toward human monocyte/macrophages and controllable shrinkage upon solvent exchange make the cellular meshes appropriate for use as biomedical implants.
Keyphrases
- ionic liquid
- drug delivery
- endothelial cells
- weight loss
- hyaluronic acid
- wound healing
- drug release
- high resolution
- bariatric surgery
- soft tissue
- dendritic cells
- tissue engineering
- induced pluripotent stem cells
- roux en y gastric bypass
- pluripotent stem cells
- molecular dynamics simulations
- physical activity
- extracellular matrix
- immune response
- adipose tissue
- insulin resistance
- mass spectrometry
- silver nanoparticles