Chain Conformation of Ring Comb-like Polymers in Dilute Solution
Comb-like polymers have emerged as a new class of materials with a wide range of potential applications.However,a prerequisite for developing these applications is the accurate characterization of the chain structure concerning the molecular parameters.In this study,we use Brownian dynamics simulations to explore the dependence of the chain size on the structural characterization parameters of ring comb-like polymers and to obtain a general description of the chain conformation in solution.Combined with Flory theory,we find that the ring comb-like chains are similar to linear comb-like chains in that the effect of graft-graft excluded volume is significant enough only at high grafting densities.In addition,the stretch factor can capture the nature of conformational changes in ring comb-like polymers,where the radius of gyration and the stretch factor satisfy a scaling exponential relationship.In this paper,we reveal the dependence of the size of the ring comb-like chains on the molecular parameters and clarify that the stretch factor is a reliable covariate to describe the relative size of ring comb-like chains.
Ring comb-like polymerBrownian dynamicsChain conformation
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