Eggshell Particle-Reinforced PVA/GO Hydrogel with Self-Healing Effect

Area of Science:

• Materials Science
• Biomaterials Engineering

Background:

• Self-healing biomaterials are crucial for extending material lifespan and reducing maintenance without external intervention.
• Polyvinyl Alcohol/Graphene Oxide (PVA/GO) hydrogels show promise but require further property enhancement.

Purpose of the Study:

• To synthesize and characterize PVA/GO/Eggshell Particle (ESP) composite hydrogels.
• To investigate the impact of ESP incorporation on the self-healing and mechanical properties of PVA/GO hydrogels.

Main Methods:

• Composite hydrogels synthesized using a freeze-thawing method.
• Characterization via X-ray Diffraction (XRD), Scanning Electron Microscopy/Energy Dispersive X-ray Spectroscopy (SEM/EDS), and Fourier-Transform Infrared Spectroscopy (FTIR).
• Mechanical properties evaluated using tensile testing.

Main Results:

• Incorporation of 1 wt% ESP improved tensile strength to 0.326 MPa while maintaining high strain capacity.
• Healing efficiency reached approximately 69% for PVA/GO, 47% for PVA/GO/ESP (0.5%), and 67% for PVA/GO/ESP (1%) hydrogels.
• The developed hydrogels exhibited rapid self-healing at room temperature without external stimuli.

Conclusions:

• ESP-reinforced PVA/GO hydrogels demonstrate enhanced tensile strength and rapid self-healing behavior.
• Promising swelling properties were observed, indicating potential for biomaterial applications.
• These composite hydrogels are suitable candidates for soft tissue engineering research.