Hydrophobic surface fabricated by electrospinning for advanced piezoelectric sensor
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초록
Electrospinning is very useful technique to fabricate micro and nanofibers for various applications such as texturing, scaffold fabrication and etc. Recently, many researchers have studied about self-cleaning membranes. Superhydrophobic self-cleaning, also known as the lotus effect, uses the right combination of micro and nano structures to create very high contact angles on the surface and keep water droplets away from the surface. Water droplets with large contact angles are easily rolled off the surface and carry dust, particles and other contaminants by gravity so it is very useful for advanced piezoelectric sensor. In this study, we developed by combining melt electrospinning device with solution electrospinning device to fabricate hydrophobic surface. Also, injection molding device was created for a comparison of various structures such as pure structure (nano, micro, and macro) and composite structure (nano/micro and nano/micro/macro). To test contact angle of various structures, optical tensiometer, manufactured by DYNE technology, England, was used. As a result, we fabricated various electrospun fibers in terms of diameter using controlling parameters such as applied voltage, collector distance, flow rate, and nozzle size. Moreover, we measured the time to maintain the water contact angle on the proposed structures. Finally, we concluded that the composite structure is better than pure structure for fabricating hydrophobic self-cleaning surface.
Abstract
Electrospinning is very useful technique to fabricate micro and nanofibers for various applications such as texturing, scaffold fabrication and etc. Recently, many researchers have studied about self-cleaning membranes. Superhydrophobic self-cleaning, also known as the lotus effect, uses the right combination of micro and nano structures to create very high contact angles on the surface and keep water droplets away from the surface. Water droplets with large contact angles are easily rolled off the surface and carry dust, particles and other contaminants by gravity so it is very useful for advanced piezoelectric sensor. In this study, we developed by combining melt electrospinning device with solution electrospinning device to fabricate hydrophobic surface. Also, injection molding device was created for a comparison of various structures such as pure structure (nano, micro, and macro) and composite structure (nano/micro and nano/micro/macro). To test contact angle of various structures, optical tensiometer, manufactured by DYNE technology, England, was used. As a result, we fabricated various electrospun fibers in terms of diameter using controlling parameters such as applied voltage, collector distance, flow rate, and nozzle size. Moreover, we measured the time to maintain the water contact angle on the proposed structures. Finally, we concluded that the composite structure is better than pure structure for fabricating hydrophobic self-cleaning surface.
참고문헌 (12)
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