Comment on Copolymer Randomization by End-Group Interchain Exchange Reactions

Abstract

The recent paper by Y. V. Kudryavtsev (Macromol. Theory Simul., https://doi.org/10.1002/mats.202400072) describes steady state conditions and kinetics of randomization in homopolymer/copolymer melts undergoing interchain exchange. By focusing on the analysis of the model equations, the author applies pseudo-first order rate coefficients, which can potentially lead to misleading conclusions, especially concerning kinetics of randomization. In this note, an extended approach, accounting for the second order of the exchange reactions and making the model applicable to polymer solutions, is proposed.