polymethylmethacrylate


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Related to polymethylmethacrylate: Perspex, plexiglass, PMMA, Acrylic plastic

polymethylmethacrylate

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

PMMA

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.
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References in periodicals archive ?
Greene et al., "Relation of surface area to in vitro elution characteristics of vancomycin-impregnated polymethylmethacrylate spacers," American Journal of Orthopedics, vol.
Reduction in the area of the anterior capsule opening after polymethylmethacrylate, silicone, and soft acrylic intraocular lens implantation.
flExural strEngth of hEat-polyM- ErizEd polyMEthylMEthacrylatE dEnturE rEsin rEinforcEd With glass, araMid, or nylon fiBErs.
[sup][12] After the proper positioning and length were verified, the appropriate-sized titanium intramedullary nail (Zimmer Corporation, USA) was driven into the canal first, and then the entire tumor cavity was filled as completely as possible with polymethylmethacrylate (PMMA).
For example, polymethylmethacrylate (PMMA) particles have been previously shown to inhibit the osteogenic differentiation both in the bone marrow stromal cells [13] and in murine MC3T3 osteoprogenitor cells [14].
Meanwhile, SABIC is developing two downstream plants in Jubail featuring the largest integrated capacity of 250,000 tonnes per annum of methyl methacrylate (MMA) and 40,000 TPA of polymethylmethacrylate (PMMA).
Studies with evolving commercial polymers, such as polymethylmethacrylate (PM MA) and polylactic acid (PLA), show how the structural information revealed by measuring viscosity parameters enables researchers to intelligently modify polymer chain length and branching to meet precise goals.
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. Plexiglas quickly proved strong enough to be used in the cockpits of military aircraft and was also used in the bomber noses of airplanes.
"Industry growth will usher in a transformation for the petrochemicals sector into one that is focused on technology, sustainability and enduring partnerships." SABIC, for example, is already making great strides toward a bigger and brighter future by developing the world's largest integrated methacrylate (MMA) and polymethylmethacrylate (PMMA) plant in the world.
The avian chapter has the most drug classifications with each chapter having comparable sections, again as those drug/treatment groups are available or appropriate for a particular species and includes antimicrobial, antifungal, antiviral, and immunomodulating agents; antiparasitic agents; chemical restraint/anesthetic/analgesic agents; nonsteroidal anti-inflammatory agents; hormones/steroids: nebulization agents; agents used to treat toxicologic conditions; psychotropic agents; nutritional/mineral support; ophthalmologic agents; oncologic agents; antimicrobial-impregnated polymethylmethacrylate (PMMA) agents; agents used to treat oiled birds; agents used in bird emergencies; and euthanasia agents.
Vertebroplasty involves injecting polymethylmethacrylate (PMMA) into the collapsed vertebrae to reduce pain via vertebral stabilization.