Multi-branched benzylidene ketone based photoinitiators for multiphoton fabrication

Zhang, Fan; Hu, Q.; Castanon, A.; He, Y.; Liu, Y.; Paul, B.T.; Tuck, C.J.; Hague, Richard J.M.; Wildman, Ricky D.

Abstract

In this article, we report the synthesis of a series of multi-branched benzylidene (BI) ketone-based photo-initiators for two-photon polymerisation based 3D printing/additive manufacturing. Resins prepared by the addition of 1 wt.% of these initiators were processed in a commercial 2 photon polymerisation system to fabricate 3D woodpile structures, the qualities of which were examined to determine the efficiencies of the initiators. The results showed that compared to commercial initiator Irgacure 369, the four-branched initiator 4-BI exhibited excellent performance with higher writing speeds and broader ideal processing windows. The successful fabrication of complex 3D structures at high writing speeds (up to 100 mm/s) indicated that the four-branched initiator 4-BI could potentially increase the fabrication efficiency and hence become a promising initiator for two-photon polymerisation.

Citation

Zhang, F., Hu, Q., Castanon, A., He, Y., Liu, Y., Paul, B., Tuck, C., Hague, R. J., & Wildman, R. D. (2017). Multi-branched benzylidene ketone based photoinitiators for multiphoton fabrication. Additive Manufacturing, 16, 206-212. https://doi.org/10.1016/j.addma.2017.06.008

• Journal Article Type: Article
• Acceptance Date: Jun 17, 2017
• Online Publication Date: Jun 23, 2017
• Publication Date: 2017-08
• Deposit Date: Dec 4, 2017
• Publicly Available Date: Dec 4, 2017
• Journal: Additive Manufacturing
• Print ISSN: 2214-7810
• Electronic ISSN: 2214-8604
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 16
• Pages: 206-212
• DOI: https://doi.org/10.1016/j.addma.2017.06.008
• Keywords: two photon polymerization; photo-initiator; TPIP; micro-fabrication
• Public URL: https://nottingham-repository.worktribe.com/output/880787
• Publisher URL: http://www.sciencedirect.com/science/article/pii/S2214860416301774?via%3Dihub
• Additional Information: This article is maintained by: Elsevier; Article Title: Multi-branched benzylidene ketone based photoinitiators for multiphoton fabrication; Journal Title: Additive Manufacturing; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.addma.2017.06.008; Content Type: article; Copyright: © 2017 Published by Elsevier B.V.
• Contract Date: Dec 4, 2017