Design principles for intrinsically circular polymers with tunable properties

This perspective discusses a set of design principles for next-generation kinetically trapped, intrinsically circular polymers (iCPs) that are inherently, selectively, and expediently depolymerizable to their monomer state once their kinetic barriers of deconstruction are overcome, thereby enabling not only the ideal shortest chemical circularity but also tunable performance properties. After describing four elements of the design principles-thermodynamics and kinetics, strategies to overcome trade-offs and unify conflicting properties, predictive modeling, and supply-chain life-cycle assessment and techno-economic analysis, which are illustrated with state-of-the-art examples-it concludes with presenting key challenges and opportunities for sustainable development of iCPs.

Automated summary

This perspective discusses design principles for next-generation kinetically trapped, intrinsically circular polymers that can be depolymerized to their monomer state. The principles aim to achieve both the ideal shortest chemical circularity and tunable performance properties. By considering thermodynamics, kinetics, strategies, predictive modeling, and life-cycle assessment, the article presents key challenges and opportunities for sustainable development of iCPs.