Fotopolümeratsioon

Fotopolümeratsioon is a chemical process where light energy is used to initiate polymerization. This process involves monomers and photoinitiators. When exposed to light of a specific wavelength, the photoinitiator absorbs the energy and breaks down into reactive species, such as free radicals or cations. These reactive species then initiate a chain reaction, causing the monomers to link together and form a polymer. The resulting polymer can range from liquids to solids depending on the type of monomers used and the degree of polymerization.

The rate and extent of fotopolümeratsioon are influenced by several factors, including the intensity and wavelength of the light source, the concentration of monomers and photoinitiators, and the presence of any inhibitors. Different types of light sources can be used, such as UV lamps or visible light LEDs, depending on the specific requirements of the application. Fotopolümeratsioon is a versatile technique with numerous applications across various industries.

In the field of dentistry, it is widely used for curing composite resins in fillings and sealants. In manufacturing, it finds application in the production of coatings, adhesives, inks, and 3D printing. The ability to control the polymerization process with light allows for precise shaping and rapid curing, making it an efficient and effective method for creating complex structures and durable materials. Its speed, spatial control, and ability to polymerize at room temperature are key advantages.