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Ring-opening polymerization
In
polymer chemistry
,
ring-opening polymerization
(
ROP
) is a form of
chain-growth polymerization
, in which the terminal end of a
polymer
chain acts as a
reactive center
where further
cyclic monomers
can react by opening its ring system and form a longer polymer chain (see figure). The propagating center can be
radical
,
anionic
or
cationic
. Some cyclic monomers such as
norbornene
or
cyclooctadiene
can be
polymerized
to high
molecular weight
polymers by using metal
catalysts
. ROP continues to be the most versatile method of synthesis of major groups of
biopolymers
, particularly when they are required in quantity.
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