  Graphynes and graphdiynes are carbon 2D allotrope structures presenting both
sp2 and sp hybridized atoms. These materials have been theoretically predicted
but due to intrinsic difficulties in their synthesis, only recently some of
these structures have been experimentally realized. Graphyne nanoscrolls are
structures obtained by rolling up graphyne sheets into papyrus-like structures.
In this work we have investigated, through fully atomistic reactive molecular
dynamics simulations, the dynamics of nanoscroll formation for a series of
graphyne ({\alpha}, \b{eta}, and {\delta} types) structures. We have also
investigated their thermal stability for a temperature range of 200-1000K. Our
results show that stable nanoscrolls can be formed for all structures
considered here. Their stability depends on a critical value of the ratio
between width and height of the graphyne sheets. Our findings also show that
these structures are structurally less stable then graphene-based nanoscrolls.
This can be explained by the graphyne higher structural porosity which results
in a decreased pi-pi stacking interactions
