A Multifunctional Bio‐Based Polyester Material Integrated with High Mechanical Performance, Gas Barrier Performance, and Chemically Closed‐Loop

Abstract

The development of multifunctional bio‐based materials with closed‐loop chemically recyclable plastics can be a paramount response to the worldwide plastic waste predicament. However, the trade‐off dilemma between the high performance and easy recycling performance of these materials still encounters huge challenges. In this contribution, inspired by the significant contribution of the hydrogen bonding networks to enhanced mechanical and gas barrier performance as well as the cosolvents to enhance recycling performance, a novel polyester material (PBHyF) synthesized by bio‐based monomers that integrate high‐performance and efficient chemical closed‐loop is presented. PBHyF show ultra‐high mechanical properties (83.2 MPa, 233.9%) and barrier properties (CO2 0.0157 barrer, O2 0.0071 barrer, H2O 5.518E‐15 g·cm/cm2·s·Pa) that are greater than bio‐based materials and most engineering plastics of previous work. More significantly, PBHyF also exhibits multifunctionality with excellent ultraviolet shielding properties, solvent‐resistant properties, and easy recycling performance. The initial monomers of PBHyF can be obtained in exceptional yields (>90.0%) and purity (>99.0%) under mild conditions by a simple energy‐efficient rapid chemical‐solvolysis strategy, even with polyolefin blend plastics. Further possesses similar high‐performance repolymerized polyester comparable to the polyester before recycling. Hence, these state‐of‐art high‐performance and easy‐recycling bio‐based materials provide a new approach for a green, sustainable material economy.

Biobased Thiol-ene Networks with High Optical Transparency and Abbe Number Derived from Citric Acid

“…In recent years, biobased polymers have garnered significant attention due to their potential in addressing the depletion of fossil fuels and escalating environmental concerns. − Benefiting from the diverse structures of renewable resources, biopolymers can not only replace petroleum-based polymers in an eco-friendly manner but also provide distinctive functionalities. − The development of synthetic strategies and the utilization of renewable monomers are pivotal in producing tailored monomers for high-performance materials. , …”