polymethyl methacrylate

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polymethyl methacrylate

/poly·meth·yl meth·ac·ryl·ate/ (pol″e-meth´il meth-ak´ril-āt) a thermoplastic acrylic resin formed by polymerization of methyl methacrylate. Abbreviated PMMA. Written also polymethylmethacrylate.


, polymethyl methacrylate (pol′ē-meth′ĭl-meth″ak′rĭ-lāt″) [ poly- + methyl + methacryl(ic acid) + -ate],


C5H8O2, a transparent, colorless acrylic polymer. It is used in optics and ophthalmology to make intraocular lenses for cataract surgery, in dentistry as a denture base material, in cosmetic surgery as a soft-tissue filler, and in the fabrication of dialysis membranes with high biocompatibility.

polymethyl methacrylate (PMMA)

Polymerized methyl methacrylate forming a light transparent thermoplastic material used in the manufacture of some spectacle lenses and formerly hard contact lenses. See modulus of elasticity; plastic spectacle frame.
References in periodicals archive ?
Technavio's report, Global Polymethyl Methacrylate Market 2015-2019, has been prepared based on an in-depth market analysis with inputs from various industry experts.
Comparative effects of denture cleansers on physical properties of polyamide and polymethyl methacrylate base polymers.
LIMITATION: Hydrophobic acrylic, silicone IOLs are not compared with polymethyl methacrylate IOLs.
They changed from using polymethyl methacrylate cemented implants (1989 to 2000) to cementless fixation in 2000.
Antibiotic-impregnated polymethyl methacrylate beads in the treatment of bumblefoot in raptors.
The actual process for making polymethyl methacrylate starts by reacting acetone with hydrogen cyanide to produce acetone cyanohydrin, which is then converted to methyl methacrylate, which in turn is then polymerized to yield polymethylmethacrylate.
Polymethyl methacrylate (PMMA), however, can form a miscible alloy with PEA that delivers improved thermal and hydrolytic stability, as well as transparency.
Among other key products, Arkema's polymethyl methacrylate (PMMA) resins and sheets are marketed in Brazil and the rest of the Americas under the Plexiglas brand.
Two papers from Tianjin Polytechnic University assess the quality of polymethyl methacrylate laser transmission welding and temperature distribution in a metal powder stream during laser fabrication.
It consists of fragments of abalone shell set in polymethyl methacrylate, better known as lucite or perspex, and comes from California.
Sabic in May said its 50:50 joint venture with Mitsubishi Rayon would build and operate two plants--one for methyl methacrylate (MMA) and the other for polymethyl methacrylate (PMMA) in Jubail.
The polymerization of methyl methacrylate occurs with a strong contraction (21%), and therefore it is mixed with polymethyl methacrylate powder.