short note on plastic production
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There are synthetic polymers, which are produced on a large scale and have many properties and uses. ... When some of the atoms of the monomers are released into small molecules, as in liquid, then the polymer is called a condensation polymer. A double bond between carbon atoms is most common in addition polymers.
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Plastics are a subspecies of a class of materials known as polymers. These are composed of large molecules , formed by joining many, often thousands, of smaller molecules (monomers) together. ... More than a hundred billion pounds of plastic were produced in 2000.
Plastics are made from natural materials such as cellulose, coal, natural gas, salt and crude oil through a polymerisation or polycondensation process. ... In a polymerisation reactor, monomers such as ethylene and propylene are linked together to form long polymer chains.
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