Pushing forward kinetic modeling tools for polymer circularity design and recycling.

Area of Science:

• Chemical Engineering
• Materials Science
• Environmental Science

Background:

• Polymer circularity is gaining importance for ecological benefits, requiring plastic waste reuse or conversion into high-value products.
• Chemical engineering principles, particularly reaction kinetics and modifications, are vital for advancing polymer circularity.
• Microkinetic models are essential for understanding the link between reaction kinetics and molecular variations in polymers.

Purpose of the Study:

• To summarize main kinetic simulation methods used in polymer circularity.
• To differentiate between deterministic and stochastic methods, highlighting their characteristics and challenges.
• To clarify the application of kinetic simulations in polymer circularity through case studies.

Main Methods:

• Review and summarization of kinetic simulation methods.
• Classification of methods into deterministic and stochastic approaches.
• Analysis of three case studies: reactive extrusion, monomer recovery, and vitrimer molecular design.

Main Results:

• Kinetic simulation methods are essential for optimizing polymer circularity processes.
• The study differentiates between deterministic and stochastic simulation approaches.
• Case studies demonstrate the application of kinetic simulations in mechanical and chemical recycling, and recycling-by-design.

Conclusions:

• Kinetic simulations are crucial for improving polymer circularity by understanding reaction kinetics and molecular variations.
• Benchmarking applied methods is important for reliable and effective polymer recycling strategies.
• Advanced kinetic modeling supports the development of sustainable plastic waste management and high-value product creation.