Impact of flexibility on the aggregation of polymeric macromolecules

S Emamyari and M Mirzaei and S Mohammadinejad and D Fazli and H Fazli, EUROPEAN PHYSICAL JOURNAL E, 46, 66 (2023).

DOI: 10.1140/epje/s10189-023-00324-4

Dependence of the dimerization probability and the aggregation behavior of polymeric macromolecules on their flexibility is studied using Langevin dynamics simulations. It is found that the dimerization probability is a non-monotonic function of the polymers persistence length. For a given value of inter-polymer attraction strength, semiflexible polymers have lower dimerization probability relative to flexible and rigid polymers of the same length. The threshold temperature of the formation of aggregates in a many-polymer system and its dependence on the polymers persistence length is also investigated. The simulation results of two- and many-polymer systems are in good agreement and show how the amount of flexibility affects the dimerization and the aggregation behaviors of polymeric macromolecules.

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