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Spin-Coating Fabrication Method of PDMS/NdFeB Composites Using Chitosan/PCL Coating
Anna Powojska1, Arkadiusz Mystkowski2, Edison Gundabattini3
1Department of Biomaterials and Medical Devices, Institute of Biomedical Engineering, Faculty of Mechanical Engineering, Bialystok University of Technology, Wiejska 45C, 15-351 Bialystok, Poland.
Researchers explored biofunctional coatings for magnetic composites, finding chitosan and polycaprolactone (PCL) create hydrophilic surfaces ideal for biomedical uses. This surface modification enhances biocompatibility for advanced biomaterials.
Area of Science:
- Materials Science
- Biomaterials Engineering
- Surface Chemistry
Background:
- Polydimethylsiloxane/neodymium-iron-boron (PDMS/NdFeB) composites offer magnetic properties suitable for biomedical applications.
- Surface modification is crucial for enhancing the biocompatibility of composite materials.
- Developing hydrophilic surfaces is a key requirement for advanced biomaterials.
Purpose of the Study:
- To investigate the application of chitosan, ferulic acid, and polycaprolactone (PCL)-based coatings on PDMS/NdFeB composites.
- To evaluate the effectiveness of the spin-coating method for creating biofunctional layers.
- To assess the impact of these coatings on surface properties and biocompatibility.
Main Methods:
- Spin-coating technique was employed to apply various biofunctional coatings.
- Scanning Electron Microscopy (SEM) and Confocal Laser Scanning Microscopy (CLSM) were used for surface analysis.
- Contact angle measurements were performed to determine surface wettability.
Main Results:
- Coating thickness decreased with increased spin speed and process time.
- Prepared coatings exhibited desirable low surface roughness (approx. 0.01 μm).
- Contact angles were significantly reduced from 105° (uncoated) to 59-88° post-coating, indicating increased hydrophilicity.
Conclusions:
- Chitosan and PCL coatings effectively modified the PDMS/NdFeB composite surface.
- The spin-coating method is viable for creating biofunctional magnetic composites.
- Hydrophilic surface modification enhances the potential of these composites for biomedical applications.
