5. Answer the following.
i.
How is polythene manufactured ?
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Polyethylene is made by addition or radical polymerization of ethylene (olefin) monomers. (Chemical formula of Ethene - C2H4). Ziegler-Natta and Metallocene catalysts are used to carry out polymerization of polyethylene.
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Polyethylene is derived from either modifying natural gas (a methane, ethane, propane mix) or from the catalytic cracking of crude oil into gasoline. In a highly purified form, it is piped directly from the refinery to a separate polymerisation plant
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