From Macromolecular Design to Functional Performance: Structural Control in Bio-based Polymer Systems

Dr. Ivan Ristić
Lecture of Institute guest
28.5.2026 10:00, Lecture room A

The transition towards sustainable, bio-based materials requires overcoming the traditional trade-off between environmental benefits and mechanical performance. This lecture explores the concept of "performance tailoring"—the precise correlation between macromolecular architecture and macroscopic properties—to bridge the gap between laboratory-scale synthesis and scalable processing. The presentation will focus on recent advancements in the structural control of two key bio-based systems: poly(lactic acid) (PLA) and segmented polyurethanes (PU). First, an energy-efficient microwave-assisted synthesis will be discussed, demonstrating the rapid, high-yield production of high-molecular-weight PLA without compromising its structural integrity. Second, the lecture will detail the scalable processing of segmented polyurethanes, utilizing bio-based diols, through reactive extrusion. This continuous processing approach allows for the fine-tuning of microphase separation, directly dictating the final mechanical modules and thermal stability of the material. Furthermore, the synergy of these two systems will be highlighted through the development of advanced hybrid PU/PLA coatings. By integrating electrospun PLA nanofibers onto flexible PU matrices, multifunctional systems with tunable barrier properties and mechanical reinforcement were achieved.

The lecture is presented in English