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Polyethylene:

It is a polymer consisting of long chains of the monomer ethylene. It is also called PE in short form. In the United Kingdom,  the polymer is called polythene.

Polyethylene is created through polymerization of monomer ethylene (ethene). It can be produced through radical polymerization, anionic addition polymerization, ion coordination polymerization or cationic addition polymerization.

Polyethylene are classified by ASTM (American Society for Testing and Materials) as there general types::

  1. Low density: (0.910-0.925 gm per cu cm)

  2. Intermediate density: (0.926 to 0.940 gm per cu cm)

  3. High density: (0.941 to 0.965 gm per cu cm)

The three types differ in rigidity, heat resistance, and ability to sustain loads. In common, they have the properties of toughness, resistivity to solvents, alkalis, excellent dielectric properties, good colourability, very low moisture absorption and relatively low cost.

It is mainly used for consumer products.
 

 
 
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