Transactions on Additive Manufacturing Meets Medicine
Vol 1 No 1 (2019): Trans. AMMM
https://doi.org/10.18416/AMMM.2019.1909S03P11

Material Properties, Structural Designs, and Printing Technologies

Dimensional accuracy of 3D printing of PEGDA parts using Digital Light Processing technology

Main Article Content

Robert Mau (Chair of Microfluidics, University of Rostock, Rostock, Germany), Jamal Nazir (Chair of Microfluidics, University of Rostock, Rostock, Germany), Hermann Seitz (Chair of Microfluidics, University of Rostock, Rostock, Germany and Department Life, Light & Matter, University of Rostock, Germany)

Abstract

Photopolymerizing 3D printing methods such as Digital Light Processing (DLP) enable high-resolution printing. Poly (ethylene glycol) diacrylate (PEGDA)-based material systems are interesting for biomedical as well as tissue engineering applications. For DLP based 3D printing the material systems need a photoinitiator as well as a light absorber for adequate printing performance. LAP (photoinitiator) and Orange G dye (light absorber) are promising additives to be used for biocompatible, photopolymerizable material compositions to be processed at a wavelength of 405 nm. Here we investigate the dimensional accuracy of DLP printed parts using PEGDA compositions with low concentrations of LAP and Orange G.

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