English Wikipedia - The Free Encycl...
Download this dictionary
Living polymerization
In
polymer chemistry
,
living polymerization
is a form of
chain growth polymerization
where the ability of a growing
polymer chain
to
terminate
has been removed. This can be accomplished in a variety of ways.
Chain termination
and
chain transfer reactions
are absent and the rate of
chain initiation
is also much larger than the rate of
chain propagation
. The result is that the polymer chains grow at a more constant
rate
than seen in traditional chain
polymerization
and their lengths remain very similar (i.e. they have a very low
polydispersity index
). Living polymerization is a popular method for synthesizing
block copolymers
since the polymer can be synthesized in stages, each stage containing a different
monomer
. Additional advantages are predetermined
molar mass
and control over
end-groups
.
See more at Wikipedia.org...
© This article uses material from
Wikipedia
®
and is licensed under the
GNU Free Documentation License
and under the
Creative Commons Attribution-ShareAlike License