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===Polystyrene===
===Polystyrene===
Polyphenylethylene, also known as polyethylbenzene or polystyrene. In its natural state is very hard and brittle, the phenyl group (C6H5 replacing a hydrogen atom) increases hardness (due to increased [[dispersion forces]]) but decreases density. However, gas can be blown through the liquid polymer during its formation to produce a foam, which is an excellent insulator (the phenyl group does not conduct heat very well) allowing it extensive application in disposable cups.
Polyphenylethylene, also known as polyethylbenzene or polystyrene. In its natural state is very hard and brittle, the phenyl group (C<sub>6</sub>H<sub>5</sub> replacing a hydrogen atom) increases hardness (due to increased [[dispersion forces]]) but decreases density. However, gas can be blown through the liquid polymer during its formation to produce a foam, which is an excellent insulator (the phenyl group does not conduct heat very well) allowing it extensive application in disposable cups.
==Future of Polymers==
==Future of Polymers==