期刊
EUROPEAN POLYMER JOURNAL
卷 195, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2023.112193
关键词
Photoinitiator; Visible light; Photopolymerization; LED; Iodonium salt; Natural compound; Monocomponent system
Iodonium salts, a type of cationic photoinitiators, have a long history of use in the polymerization of epoxides or vinyl ethers. However, their UV-centered absorption restricts their use to the visible range through a photosensitization process. To simplify the composition of photopolymerizable resins, various dyes have been covalently linked to iodonium salts, resulting in monocomponent photoinitiating systems. This review provides an overview of the different dyes connected to iodonium salts.
Iodonium salts are historical cationic photoinitiators extensively used for the polymerization of epoxides or vinyl ethers. As drawback, the absorption of iodonium salts is strongly UV-centered so that this UV photoinitiator can only operate in the visible range by mean of a photosensitization process. With aim at simplifying the composition of the photopolymerizable resins, numerous chromophores have been covalently linked to the iodonium salts, enabling to design monocomponent photoinitiating systems. In this review, an overview of the different dyes that have been connected to iodonium salts is provided.
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