Monday, October 24, 2016

REACTIONS OF POLYMERS



ADDITION POLYMERIZATION
  • A chemical process in which monomers with multiple bonds are joined together by covalent bond to form larger molecule without the loss of a small molecule.
  • Also called Chain-Growth Polymerization.
  • Reactive intermediates at chain end and initiator is needed in this reaction.
  • Some of the examples :

  • Mechanism involved :


CONDENSATION POLYMERIZATION
  •  A chemical process in which two monomers joined together to form larger molecule and eliminate smaller molecule such as H2O, HCL or alcohols (methanol).
  • Also called Step-Growth Polymerization.
  • One of the example :


  • Mechanism involved :



  • COMPARISON BETWEEN ADDITION (CHAIN) & CONDENSATION (STEP) POLYMERIZATION


    To make polymer become more attractive, lets take a look  one of the interesting video :



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