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    Poly (methyl methacrylate) (PMMA) is a transparent thermoplastic, often used as a light or shatter-resistant alternative to glass. It is sometimes called acrylic glass.

    Chemically, it is the synthetic polymer of methyl methacrylate.

    PMMA is an economical alternative to polycarbonate (PC) when extreme strength is not necessary. Additionally, PMMA does not contain the potentially harmful bisphenol-A subunits found in polycarbonate.

    It is often preferred because of its moderate properties, easy handling and processing, and low cost, but behaves in a brittle manner when loaded, especially under an impact force, and is more prone to scratching compared to conventional inorganic glass.

    More information available at http://en.wikipedia.org/wiki/Poly (methyl_methacrylate)


    Aluminum is a silvery white member of the boron group of chemical elements. It is not soluble in water under normal circumstances.

    Aluminum is remarkable for the metal's low density, thermal conduction and for its ability to resist corrosion due to the phenomenon of passivation.

    More information available at http://en.wikipedia.org/wiki/Aluminum


    Polycarbonate is a synthetic resin in which the polymer units are linked through carbonate groups, including many molding materials and films.

    Polycarbonate is a versatile, tough plastic used for a variety of applications, from bulletproof windows to compact disks (CDs). The main advantage of polycarbonate over other types of plastic is unbeatable strength combined with light weight.

    More information available at http://en.wikipedia.org/wiki/Polycarbonate


    Polystyrene is an aromatic polymer made from the monomer styrene, a liquid hydrocarbon that is manufactured from petroleum by the chemical industry.

    Polystyrene is one of the most widely used plastics, the scale being several billion kilograms per year.

    More information available at http://en.wikipedia.org/wiki/Polystyrene


    Polypropylene is a thermoplastic polymer used in a wide variety of applications including packaging, textiles (e.g., ropes, thermal underwear and carpets), stationery, plastic parts and reusable containers of various types, laboratory equipment, loudspeakers, automotive components, and polymer banknotes.

    An addition polymer made from the monomer propylene, it is rugged and unusually resistant to many chemical solvents, bases and acids.

    More information available at http://en.wikipedia.org/wiki/Polypropylene

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