Preferred Label : uniform polymer;
IUPAC definition : A polymer composed of molecules uniform with respect to relative molecular mass and
constitution.;
Scope note : the adjectives monodisperse and polydisperse are deeply rooted in the literature,
despite the former being non-descriptive and self-contradictory. they are in common
usage and it is recognized that they will continue to be used for some time; nevertheless,
more satisfactory terms are clearly desirable. after an extensive search for possible
replacements, the terms uniform and non-uniform have been selected and they are now
the preferred adjectives.; a polymer uniform with respect only to either relative molecular mass or constitution
may be termed uniform, provided a suitable qualifier is used (e.g. a polymer uniform
with respect to relative molecular mass).; a copolymer comprising linear molecules of uniform relative molecular mass and uniform
elemental composition but different sequential arrangements of the various types of
monomeric units, is not uniform (e.g. a copolymer comprising molecules with a random
arrangement as well as a block arrangement of monomeric units).; a polymer comprising a mixture of linear and branched chains, all of uniform relative
molecular mass, is not uniform.;
Origin ID : U06558;
See also
A polymer composed of molecules uniform with respect to relative molecular mass and
constitution.
