Tunable Electrospun Polycaprolactone Membranes for Selective Particle Size Filtration.

Area of Science:

• Biomaterials Science
• Nanotechnology
• Chemical Engineering

Background:

• Conventional blood filtration methods face limitations in selectivity and efficiency.
• Membrane-based filtration, particularly electrospinning, offers a promising alternative for advanced blood processing.
• Developing tunable, highly porous nanofiber membranes is crucial for clinical diagnosis and research.

Purpose of the Study:

• To fabricate and characterize an electrospun polycaprolactone (PCL) membrane for selective blood filtration.
• To optimize electrospinning parameters for achieving desired porosity and fiber integrity.
• To evaluate the filtration efficiency of the developed PCL membrane for particulate matter.

Main Methods:

• Electrospinning of a 13% polycaprolactone (PCL) blend solution (80 and 10 kDa) in a DMF:THF mixture.
• Tuning electrospinning parameters to control nanofiber morphology and achieve a mean pore size of 7 µm.
• Filtration trials using standardized beads to assess particle retention efficiency.

Main Results:

• Successfully fabricated a PCL electrospun membrane with a mean pore size of 7 µm.
• Achieved 99% filtration efficiency for 10 µm beads, demonstrating effective particle retention.
• Maintained membrane integrity during filtration trials.

Conclusions:

• The developed PCL electrospun membrane serves as a tunable and efficient alternative to conventional blood filtration techniques.
• This membrane shows significant potential for applications in plasma separation and circulating tumor cell isolation.
• The study highlights the versatility of electrospinning for creating advanced filtration materials for biomedical applications.