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Proceedings Paper

Bioresists from renewable resources as sustainable photoresins for 3D laser microlithography: material synthesis, cross-linking rate and characterization of the structures
Author(s): Edvinas Skliutas; Sigita Kašėtaitė; Giedrė Grigalevičiūtė; Linas Jonušauskas; Sima Rekštytė; Jolita Ostrauskaitė; Mangirdas Malinauskas
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Paper Abstract

Stereolithography (SLA) allows rapid and accurate materialization of computer aided design (CAD) models into real objects out of photoreactive resin. Nowadays this technology has evolved to a widespread simple and flexible personal tabletop devices - three dimensional (3D) optical printers. However, most 3D SLA printers use commercially available resins which are not cheap and of limited applicability, often of unknown chemical ingredients and fixed to certain mechanical properties. For advanced research, it is important to have bio-resin appropriate to 3D print microscaffolds for cell proliferation and tissue engineering. To fill these requirements would be to use sources from bio-based resins, which can be made of naturally derived oils. Chosen substances glycerol diglycidyl ether and epoxidized linseed oil can be obtained from renewable recourses, are biodegradable and can be synthesized as sustainable photosensitive materials.1 UV (ff=365 nm) lithography was employed to determine their photocross-linking rate and cured material properties. After exposing material to UV radiation through a micro-patterned amplitude mask selective photopolymerization was observed. Acetone was used as a solvent to dissolve UV unaffected area and leaving only exposed microstructures on the substrate. The resins were compared to FormLabs Form Clear and Autodesk Ember PR48 as standard stereolithography materials. Finally, 3D microporous woodpile scaffolds were printed out of commercial resins and cells adhesion in them were explored.

Paper Details

Date Published: 20 February 2017
PDF: 11 pages
Proc. SPIE 10115, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics X, 1011514 (20 February 2017); doi: 10.1117/12.2249600
Show Author Affiliations
Edvinas Skliutas, Vilnius Univ. (Lithuania)
Sigita Kašėtaitė, Kaunas Univ. of Technology (Lithuania)
Giedrė Grigalevičiūtė, Vilnius Univ. (Lithuania)
Linas Jonušauskas, Vilnius Univ. (Lithuania)
Sima Rekštytė, Vilnius Univ. (Lithuania)
Jolita Ostrauskaitė, Kaunas Univ. of Technology (Lithuania)
Mangirdas Malinauskas, Vilnius Univ. (Lithuania)

Published in SPIE Proceedings Vol. 10115:
Advanced Fabrication Technologies for Micro/Nano Optics and Photonics X
Georg von Freymann; Winston V. Schoenfeld; Raymond C. Rumpf, Editor(s)

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