Comment on "Effects of topological constraints on linked ring polymers in solvents of varying quality" by Z. A. Dehaghani, I. Chubak, C. N. Likos and M. R. Ejtehadi, <i>Soft Matter</i>, 2020, <b>16</b>, 3029.
editorial · Level V
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- Also identified by DOI 10.1039/d3sm01614e.
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Abstract
This comment critically evaluates the work of Dehaghani <i>et al.</i>, who investigated the conformational behavior of catenated polymers under diverse solvent conditions using coarse-grained molecular dynamics simulations. While their study provides valuable insights into the scaling behavior of poly[<i>n</i>]catenane's radius of gyration in a good solvent, significant discrepancies arise, particularly concerning the reported <i>θ</i>-temperature trends. The validity of their methodology in determining <i>θ</i>-temperatures for linear and ring polymers is questioned, given observed disparities in chosen number of bead ranges that imply varying molecular weights. This comment underscores the need for a meticulous reassessment of the methodologies and interpretations presented in Dehaghani <i>et al.</i>'s study, emphasizing the importance of rigorous considerations in the investigation of the physical properties of catenated polymers.