life cycle of a plastic(since manufacturing)
-Plastic derived from organic products . The materials used in the production of plastics are natural , such as cellulose , coal , natural gas , salt and , of course , oil
-PETROL:It is a complex mixture of many components . To be useful, it must be processed.
Plastics production begins with a distillation process in an oil refinery .The distillation process involves the separation of crude oil into lighter fractions called groups . Each fraction is a mixture of hydrocarbon chains ( chemical compounds of carbon and hydrogen ) , which differ in the size and structure of its molecules One of these fractions , naphtha , is the most important for the production of plastics element .
The two major processes used to produce plastics are called polymerisation and polycondensation , and both require special catalysts. In a polymerization reactor , the monomers such as ethylene or propylene together to form long polymer chains . Each polymer has different properties , structure size depending on the types of basic used.
