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Synthesis of Keratin-based Nanofiber for Biomedical Engineering
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Developing lignin-based bio-nanofibers by centrifugal spinning technique
Elena Stojanovska1, Mustafa Kurtulus2, Abdelrahman Abdelgawad3
1Temag Labs, Istanbul Technical University, Istanbul, Turkey; Areka Advanced Ltd., Istanbul, Turkey.
International Journal of Biological Macromolecules
|February 14, 2018
Summary
Researchers developed thermally stable lignin/polyurethane nanofibers using centrifugal spinning. Optimal parameters yielded fibers below 500nm, with a 1:1 blend ratio proving most feasible for spinnability.
Area of Science:
- Materials Science
- Polymer Science
- Nanotechnology
Background:
- Lignin, a renewable biopolymer, presents potential for sustainable material development.
- Thermoplastic polyurethane (TPU) is a versatile polymer with tunable properties.
- Combining lignin and TPU could lead to novel nanofiber materials with enhanced characteristics.
Purpose of the Study:
- To produce lignin-based nanofibers via centrifugal spinning.
- To optimize process parameters for controllable nanofiber morphology and properties.
- To investigate the spinnability and thermal stability of lignin/TPU blends.
Main Methods:
- Centrifugal spinning of lignin-thermoplastic polyurethane blends.
- Optimization of rotational speed, nozzle diameter, and spinneret-to-collector distance.
- Characterization of polymer solutions (viscosity, surface tension) and nanofibers (SEM, DSC, TG analysis).
- Multiple regression analysis to identify key parameters influencing fiber diameter.
Main Results:
- Thermally stable lignin/polyurethane nanofibers with diameters below 500nm were successfully produced.
- A 1:1 lignin/TPU blend ratio demonstrated optimal spinnability.
- Optimal processing parameters identified: 8500rpm angular velocity, 0.5mm nozzle diameter, and 30cm working distance.
Conclusions:
- Centrifugal spinning is a viable method for producing lignin-based nanofibers.
- Process parameter optimization is crucial for controlling nanofiber diameter and morphology.
- Lignin/TPU blends offer a promising route to sustainable, thermally stable nanofibers.
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