Polymethylmetakrylát

Polymethylmethacrylate, often abbreviated as PMMA, is a transparent thermoplastic commonly known as acrylic glass or simply acrylic. It is a synthetic polymer derived from the monomer methyl methacrylate. PMMA is valued for its clarity, rigidity, and weather resistance. It transmits visible light more effectively than most types of glass and is also resistant to ultraviolet radiation, which prevents it from yellowing or degrading over time when exposed to sunlight.

The material is produced through polymerization of methyl methacrylate, a process that can be carried out in various ways, including bulk polymerization, suspension polymerization, and emulsion polymerization. PMMA can be processed using standard thermoplastic techniques such as injection molding, extrusion, and casting. Its ease of fabrication and ability to be molded into complex shapes make it versatile.

PMMA finds widespread use in a diverse range of applications. It is commonly employed in the manufacturing of windows, skylights, and aquariums due to its transparency and impact resistance, though it is more brittle than polycarbonate. It is also used in lenses, signage, decorative items, and protective coatings. In the medical field, PMMA is utilized in bone cements and artificial lenses for cataract surgery. Its ability to be easily colored and shaped contributes to its popularity in artistic and design applications.