  We performed Langevin dynamics simulations of amphiphilic polymers that
contain strongly associating stickers connected by long soluble chain segments.
We explored the aging of a thermoreversible gel which is crosslinked by
aggregates (clusters) of the stickers and observed a dramatic increase of their
lifetime with aging. We find that the observed aging is the result of
structural reorganization of the network: the number of crosslinks decreases
with time as small clusters disintegrate and their stickers are reabsorbed by
large clusters that grow and become more stable by forming additional
intramolecular associations between their stickers.
