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We enumerate all minimal energy packings (MEPs) for small single linear andring polymers composed of spherical monomers with contact attractions andhard-core repulsions, and compare them to corresponding results for monomerpackings. We define and identify ``dividing surfaces" in polymer packings,which reduce the number of arrangements that satisfy hard-sphere and covalentbond constraints. Compared to monomer MEPs, polymer MEPs favor intermediatestructural symmetry over high and low symmetries. We also examine thepacking-preparation dependence for longer single chains using moleculardynamics simulations. For slow temperature quenches, chains form crystalliteswith close-packed cores. As quench rate increases, the core size decreases andthe exterior becomes more disordered. By examining the contact number, weconnect suppression of crystallization to the onset of isostaticity indisordered packings. These studies represent a significant step forward in ourability to predict how the structural and mechanical properties of compactpolymers depend on collapse dynamics.

Minimal energy packings and collapse of sticky tangent hard-sphere polymers