Question

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pens are made up of which plastic ​

Answer 1

Answer:

polystyrene

The barrel of the pen is made of polystyrene, a cheap, mass produced plastic. The production of polystyrene releases chlorofluorocarbons (Schwarz, Leisewitz 1999) into the environment- gases that have roughly 1200 times the greenhouse effects of carbon dioxide.

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Answer 2

Answer:

The points of most ballpoint pens are made out of brass, which is an alloy of copper and zinc. This material is used because of its strength, resistance to corrosion, appealing appearance, and ability to be easily formed. Other parts, like the ink cartridge, the body, or the spring can also be made with brass.