Preparation and Properties of New Photoinitiator for UV-LED Photo Source

doi:10.7517/issn.1674-0475.190707

Abstract

Abstract: One photoinitiator based on the 3,4-ethylenedioxythiophene (EDOT) was synthesized through introducing an acetylehienyl and an acetyl group respectively into two active sites of the EDOT. The structure was characterized by ¹HNMR spectroscopy. UV-Vis absorption spectroscopy, thermal stability were also tested. We also measured its photoinitiating activity with real-time FTIR technology. The results show that the photoinitiator has good absorption in the range of 365-405 nm, which is better than 2-isopropylthioxanthone(ITX) and suitable for UV-LED photocuring systems. Meanwhile, its thermal stability is better than ITX and the photoinitiating activity is comparable to ITX.

Key words: UV-LED, photoinitiator, EDOT, radical photopolymerization

PANG Yulian, ZHAO Liying, GAO Ming, ZOU Yingquan. Preparation and Properties of New Photoinitiator for UV-LED Photo Source[J]. Imaging Science and Photochemistry, 2019, 37(5): 438-444.

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