Polyethylene (PE)

Polyethylene is an inexpensive and versatile polymer with numerous applications. Control of the molecular structure leads to low-density Polyethylene (LDPE), linear low-density Polyethylene (LLDPE), high-density Polyethylene (HDPE) and medium-density Polyethylene (MDPE) products with corresponding differences in the balance of properties. Any of various artificial resins consisting of many ethyl groups (CH 2 CH 2) joined end to end or in branched chains.

Features & Benefits

  • are easily molded
  • are resistant to other chemicals
  • can be repeatedly softened and hardened by heating and cooling

 

Properties

  • Glass transition temperature: -78oC.
  • Melting temperature: 100oC.
  • Amorphous density at 25oC: 0.855 g/cm3.
  • Crystalline density at 25oC: 1.00 g/cm3.
  • Molecular weight of repeat unit: 28.05 g/mol.

Applications

They are used for many purposes, such as making containers, tubes, and packaging.