Saturday, June 11, 2011

Polymer

macromolecule (large molecule) composed of repeating structural units
  • subunits connected by covalent chemical bonds.

extraordinary range of properties of polymeric materials
  • essential and ubiquitous role in everyday life
  • familiar synthetic plastics and elastomers to natural biopolymers such as nucleic acids and proteins that are essential for life.

continuously linked backbone
  • used for the preparation of plastics
  • consists mainly of carbon atoms
  • example: polyethylene, whose repeating unit is based on ethylene monomer.

A PLASTIC IS A POLYMER. BUT A POLYMER IS NOT A PLASTIC.


Source: wikipedia

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