I’m working on creating electrospun nanofiber composites with high mechanical strength and optimal conductivity using PVA and graphene. Could anyone recommend the best electrospinning parameters (such as voltage, flow rate, needle gauge, and collector distance) to achieve these properties? Additionally, what adjustments or troubleshooting steps can improve fiber alignment and conductivity, and prevent clogging? Any references to studies or proven methods would be greatly appreciated.
1. Solution Concentration: A PVA concentration of 8–12% (w/v) is often used.
2. Solvent Ratio: Commonly, a mixture of distilled water and ethanol
3. Graphene Loading: Typically, incorporating graphene at 0.5–5% by weight of PVA can enhance the mechanical and electrical properties without compromising fibre formation.
4. Higher rates may lead to larger fibres and decreased quality.
5. A distance of 10-20 cm between the needle and collector helps maintain a stable electrospinning process.
6. Controlling humidity (around 30-50%) and temperature (20-25 °C)
7. Crosslinking the fibres (e.g., with glutaraldehyde) after electrospinning can enhance the mechanical stability and performance of the nanofibres.
Experimentation with these parameters can help tailor the properties of PVA/graphene nanofiber composites for specific applications.
Thank you so much for your response! Could you share any proven methods or studies that support these recommendations? Hajer Hadad Alhussiny
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