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We use molecular simulations to study jamming of a crumpled bead-spring modelpolymer in a finite container and compare to jamming of repulsive spheres.After proper constraint counting, the onset of rigidity is seen to occurisostatically as in the case of repulsive spheres. Despite this commonality,the presence of the curved container wall and polymer backbone bonds introducenew mechanical properties. Notably, these include additional bands in thevibrational density of states that reflect the material structure as well asoscillations in local contact number and density near the wall but with loweramplitude for polymers. Polymers have fewer boundary contacts, and thislow-density surface layer strongly reduces the global bulk modulus. We furthershow that bulk-modulus dependence on backbone stiffness can be described by amodel of stiffnesses in series and discuss potential experimental andbiological applications.

Effects of spherical confinement and backbone stiffness on flexible polymer jamming