functionality, \(f\)

of a monomer
https://doi.org/10.1351/goldbook.FT07505
Number of covalent bonds that a @M04019@ or monomeric unit in a macromolecule or @O04286@ can form with other reactants.
Notes:
  1. There are no monofunctional monomers.
  2. If \(f = 2\), a @L03546@ macromolecule or a @M03662@ can be formed.
  3. If \(f > 2\), a branch point can be formed leading to a branched macromolecule, a @NT07562@ or a micronetwork.
  4. Ethene and ethylene glycol are examples of difunctional monomers, glycerol is an example of a trifunctional @M04017@, and divinylbenzene and pentaerythritol are examples of tetrafunctional monomers.
Source:
PAC, 2007, 79, 1801. (Definitions of terms relating to the structure and processing of sols, gels, networks, and inorganic-organic hybrid materials (IUPAC Recommendations 2007)) on page 1805 [Terms] [Paper]
Cite as: IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). Online version (2019-) created by S. J. Chalk. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook.
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Last revised: February 24, 2014