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Mould-Free Microneedles in a Single Step: 3D Printing with Photopolymer Resins for Transdermal Delivery
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Mould-Free Microneedles in a Single Step: 3D Printing with Photopolymer Resins for Transdermal Delivery
Abstract Background: Digital light processing (DLP) 3D printing has emerged as a rapid alternative to labour-intensive micro-moulding for producing microneedle (MN) arrays, yet its use in biodegradable, dissolving MNs has been limited by proprietary, non-degradable resins. Methods: The current study proposed an innovative, biocompatible PEGDA–vinyl-pyrrolidone photo-resin with lithium phenyl(2,4,6-trimethylbenzoyl) phosphinate initiator, which s…
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