Tag: Plastics

Plastics are materials made from long chains of molecules, called polymers. Polymers can be made from many different kinds of chemicals, including natural ones such as cellulose and rubber. Plastics are usually classified by the kind of polymer they are made from. For example, polyethylene (PE) is made from ethylene, while polypropylene (PP) is made from propylene. Their good properties, relatively low price, and ability to create almost any shape make them the 1st raw material used in the XX century in product manufacturing