Why such high pressure is required in the formation of low density polythene
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Polyethylene or polythene (abbreviated PE; IUPACname polyethene or poly(methylene)) is the most common plastic. As of 2017, over 100 million tonnesof polyethylene resins are produced annually, accounting for 34% of the total plastics market.[5][6]Its primary use is in packaging (plastic bags, plastic films, geomembranes, containers including bottles, etc.). Many kinds of polyethylene are known, with most having the chemical formula (C2H4)n. PE is usually a mixture of similar polymers of ethylene with various values of n. Polyethylene is a thermoplastic; however, it can become a thermoset plastic when modified (such as cross-linked polyethylene).
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Answer:low density polythene (ldpe) is a thermoplastic made from the monomer ethylene. It was the first grade of polyethylene,. Produced in 1933 by imperial chemical industry (ici) using a high pressure process via free radical polymerization.
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