  We used Langevin dynamics simulations of short associative polymers with two
stickers placed symmetrically along their contour to study the effect of the
primary sequence of these polymers on their organization inside condensed
droplets. We observed that the shape, size and number of sticker clusters
inside the condensed droplet change from a single cylindrical fiber to many
compact clusters, as one varies the location of stickers along the chain
contour. Aging due to conversion of intramoleclular to intermolecular
associations was observed in droplets of telechelic polymers, but not for other
sequences of associating polymers. The relevance of our results to condensates
of intrinsically disordered proteins is discussed.
