polymethylmethakrylat

Polymethylmethacrylate, often abbreviated as PMMA, is a synthetic polymer derived from methyl methacrylate monomer. It is a transparent thermoplastic commonly known by trade names such as Plexiglas, Lucite, and Perspex. PMMA is characterized by its excellent optical clarity, high light transmittance, and resistance to ultraviolet radiation, which prevents yellowing and degradation over time.

The production of PMMA typically involves polymerization of methyl methacrylate, which can be carried out using various methods including bulk polymerization, suspension polymerization, and emulsion polymerization. The resulting polymer can be processed into sheets, rods, pellets, and other forms through methods like extrusion, injection molding, and casting.

PMMA exhibits good mechanical properties, including rigidity and tensile strength, although it is more brittle than some other plastics. It is also relatively lightweight and offers good electrical insulation. Its resistance to weathering and a wide range of chemicals makes it suitable for outdoor applications. However, it can be susceptible to scratching and some organic solvents.

Due to its transparency and durability, PMMA finds widespread use in numerous applications. It is commonly employed as a substitute for glass in windows, skylights, and aquariums. It is also used in signage, lighting fixtures, automotive components like taillights, and medical devices such as bone cement and intraocular lenses. In the consumer sector, PMMA is found in displays, lenses for eyeglasses and sunglasses, and decorative items.