The role of topological constraints in the kinetics of collapse of macromolecules

摘要: It is shown that the kinetics of collapse a polymer coil consisting N segments after an abrupt decrease temperature two-stage process if >> Ne. The first stage takes time ∼ N2 and leads to peculiar state — crumpled, or fractal, globule. Any part chain any scale itself globule in this ; these parts are segregated from each other space due non-phantomness chain. fold crumpled fractal line with dimension 3, equal dimension. second knotting it realized by means reptation-like mechanism motion, N3 accompanied increase density.