A photoinitiator is a chemical compound that initiates polymerization or curing processes when exposed to light, typically ultraviolet (UV) or visible light. Photoinitiators are commonly used in various applications, such as in the production of coatings, adhesives, inks, and dental materials. When exposed to light, photoinitiators undergo a chemical reaction, producing free radicals or other reactive species that initiate the polymerization of monomers into polymers.
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