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    Why does poly(ethene) have a high density and what are the physical differences between this and normal polymers?
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    whats a normal polymer, it really depends in additon polymers what the R groups are
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    (Original post by wigman15)
    Why does poly(ethene) have a high density and what are the physical differences between this and normal polymers?

    polythene isnt necessarily high density.
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    (Original post by Ralfskini)
    polythene isnt necessarily high density.
    hence LDP and HDP, polythene has a high density because it has no R groups so the chains can get close together
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    Thanks for your help guys!!!
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    (Original post by wigman15)
    Why does poly(ethene) have a high density and what are the physical differences between this and normal polymers?

    there are two types of polythene:
    1) High density polythene (used for freezer bags, water pipes and cable insullation)
    20 Low density polythene (used for bottles, plastic bags, kitchen films etc)

    All polythenes are chemically inert.
 
 
 
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