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Light microscopic picture of a PMMA-copolymer, made by suspension polymerization SEM-Picture of PMMA-particles, that started to coalesce during suspension polymerization, close to a single bead SEM-picture of a Pac-Man shaped PMMA-copolymer particle, made by suspension polymerization
Poly(methyl methacrylate) (PMMA) is a synthetic polymer derived from methyl methacrylate. It is a transparent thermoplastic, used as an engineering plastic. PMMA is also known as acrylic, acrylic glass, as well as by the trade names and brands Crylux, Hesalite, Plexiglas, Acrylite, Lucite, and Perspex, among several others .
Poly(methyl acrylate) (PMA) is a family of organic polymers with the formula (CH 2 CHCO 2 CH 3) n.It is a synthetic acrylate polymer derived from methyl acrylate monomer. The polymers are colorless.
For example, polystyrene-b-poly(methyl methacrylate) or PS-b-PMMA (where b = block) is usually made by first polymerizing styrene, and then subsequently polymerizing methyl methacrylate (MMA) from the reactive end of the polystyrene chains. This polymer is a "diblock copolymer" because it contains two different chemical blocks.
poly(methyl methacrylate) (PMMA) – polyvinylidene fluoride (PVDF) homopolymer–copolymer: polypropylene (PP) – EPDM; polycarbonate (PC) – acrylonitrile butadiene styrene (ABS): Bayblend, Pulse, Anjablend A; Polymer blends can be used as thermoplastic elastomers.
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For many applications it has since been replaced by other methods for making PMMA such as extrusion, which gives uniform surface features. However, for applications where strength is critical cell casting techniques are still employed in conjunction with stretching, which produces a stronger overall material.
The federal judge hearing arguments over whether tech billionaire Elon Musk's role at the Department of Government Efficiency is unconstitutional indicated that she will not issue a ruling Friday ...