Wikia

Psychology Wiki

Addition polymerization

Talk0
34,142pages on
this wiki
Revision as of 13:01, October 6, 2006 by Lifeartist (Talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Assessment | Biopsychology | Comparative | Cognitive | Developmental | Language | Individual differences | Personality | Philosophy | Social |
Methods | Statistics | Clinical | Educational | Industrial | Professional items | World psychology |

Biological: Behavioural genetics · Evolutionary psychology · Neuroanatomy · Neurochemistry · Neuroendocrinology · Neuroscience · Psychoneuroimmunology · Physiological Psychology · Psychopharmacology (Index, Outline)



This article needs rewriting from a neurochemistry point of view.

Addition polymerization,also called polyaddition or chain growth polymerization, is a polymerization technique where monomer molecules add on to a growing polymer chain one at a time.

nM (monomer) --> -(-M-)n- (polymer)


The main characteristics are:

  • polymerization process takes place in three distinct steps:
  1. chain initiation, usually by means of an initiator which starts the chemical process. Typical initiators include any organic compound with a labile group: e.g. azo (-N=N-), disulphide (-S-S-), or peroxide (-O-O-). Two examples are benzoyl peroxide and AIBN.
  2. chain propagation
  3. chain termination, which occurs either by combination or disproportionation. Termination, in radical polymerization, is when the free radicals combine and is the end of the polymerisation process.
  • some side reactions may occur, such as: chain transfer to monomer, chain transfer to solvent, and chain transfer to polymer.


Some Examples Edit

This page uses Creative Commons Licensed content from Wikipedia (view authors).

Around Wikia's network

Random Wiki