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Updated: Mar 21, 2026
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Microfluidic Fabrication of Polymeric and Biohybrid Fibers with Predesigned Size and Shape
Published on: January 8, 2014
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Designing highly structured polycaprolactone fibers using microfluidics.
Farrokh Sharifi1, Diamant Kurteshi1, Nastaran Hashemi2
1Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA.
Summary
This study developed polycaprolactone (PCL) microfibers using a microfluidic method for biomedical uses. The technique allows tunable fiber properties, significantly improving mechanical strength for applications in regenerative medicine and tissue engineering.
Area of Science:
- Biomaterials Science
- Polymer Science
- Tissue Engineering
Background:
- Microfibers are crucial for regenerative medicine and tissue engineering.
- Polycaprolactone (PCL) is a versatile polymer for biomedical applications.
- Controlled fabrication of microfibers is essential for optimizing their performance.
Purpose of the Study:
- To develop a microfluidic approach for fabricating polycaprolactone (PCL) microfibers.
- To investigate the influence of processing parameters on microfiber morphology and mechanical properties.
- To enhance the mechanical performance of PCL microfibers for advanced biomedical applications.
Main Methods:
- Utilized a microfluidic system to create PCL microfibers.
- Varied polycaprolactone concentrations (2%, 5%, 8%) and sheath-to-core flow rate ratios (120:5 to 10:5 µL/min).
- Characterized microfiber morphology, cross-sections, mechanical properties (tensile stress, strain, Young's modulus), porosity, and roughness.
Main Results:
- Microfluidic fabrication significantly improved mechanical properties compared to other methods.
- Decreasing flow rate ratio and increasing PCL concentration increased microfiber size.
- Tensile strength, strain, and Young's modulus increased from 24.51MPa to 77.07MPa, 567% to 1420%, and 247.25MPa to 539.70MPa, respectively.
- Porosity and roughness decreased with higher PCL concentrations; flow rate ratio had minimal impact on roughness.
Conclusions:
- The microfluidic approach offers precise control over PCL microfiber fabrication.
- Optimized parameters yield microfibers with superior mechanical properties for biomedical applications.
- This method provides a pathway for developing advanced materials for regenerative medicine and tissue engineering.
