Metakrylaattiryhmä

Metakrylaattiryhmä refers to the chemical functional group derived from methacrylic acid. Its general formula is CH2=C(CH3)COO−. This group is characterized by a vinyl group (a carbon-carbon double bond) attached to a carboxylate group, with a methyl group also attached to the double-bonded carbon atom. The presence of the double bond makes the metakrylaattiryhmä highly reactive, particularly in polymerization reactions.

Polymers containing metakrylaattiryhmä units are known as polymethacrylates. These polymers are formed through addition polymerization, where the double bonds in multiple metakrylaattiryhmä monomers link together to form long chains. The properties of polymethacrylates can vary significantly depending on the specific monomer and the polymerization conditions.

Polymethacrylates find widespread use in various applications. A well-known example is poly(methyl methacrylate) (PMMA), often referred to by trade names like Plexiglas or Lucite. PMMA is a transparent thermoplastic commonly used as a shatter-resistant alternative to glass in windows, aquariums, and signage. Other polymethacrylates are employed as coatings, adhesives, sealants, and in specialized applications like contact lenses and dental prosthetics. The versatility of metakrylaattiryhmä chemistry allows for the tailoring of material properties for diverse industrial and consumer needs.