Fabrication of Biocompatible Micro-Patterned PET Film via UV Imprint Lithography Technique
발표자
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초록
내용
In the imprint lithography process using ultraviolet (UV) curing, UV-curing resin is pressed at a constant pressure using a mold (template) with various micro-size patterns, UV irradiated, and then removed from the mold. In the present study, various micro-size patterns (triangle, square, hexagon, and pillar hexagonal) were implemented onto PET film using super-hydrophobic UV curing resins to improve its hydrophobicity, and their surface characteristics and biocompatibility were evaluated. The super-hydrophobic UV curing resins were prepared by various combinations of fluorine-free acrylic monomers and various additives. The pillar hexagonal pattern had a contact angle of ~140°, which was the most hydrophobic. The cell survival rate on the micro-patterned PET films was higher than 80%.