Aug 2026· Industrial & Engineering
Chemistry Research· 0 citations· 50 references
Abstract
Polylactide (PLA) is a promising biobased and biodegradable polymer, but its limited heat resistance and mechanical performance hinder broader engineering applications. Herein, high-strength and reprocessable PLA vitrimers were prepared through a facile reactive blending strategy. A multifunctional polyol, bis(2-hydroxyethyl)imino-tris(hydroxymethyl)methane (BTM), was incorporated into PLA chains via internal-catalyzed transesterification, followed by cross-linking with 4,4′-methylenediphenyl diisocyanate (MDI) to form a dynamic covalent network. The resulting PLA vitrimers exhibited enhanced mechanical strength, toughness, thermal stability, and water resistance while retaining reprocessability. The optimal sample achieved a tensile strength of 93.4 MPa (42% higher than neat PLA) without compromising ductility, and retained its shape at 120 °C. Furthermore, a biobased long-chain polyol (GTA) was employed to tailor the network architecture, leading to a more balanced combination of strength and toughness. This work demonstrates an effective strategy for transforming commercial PLA into high-performance, recyclable materials for sustainable engineering plastics.
The differences in molecular chain structure, polarity, and crystallinity among mixed polyolefins severely weaken interfacial adhesion in their blends, posing a critical barrier to the efficient upcycling of mixed waste polyolefin plastics. Herein, a solvent-free, one-pot reactive extrusion process is developed, whic...
Tong Zhang, Rong Huang, Bin-Bo Wang et al.· Industrial & Engineering...· 0 citations
Development of sustainable vitrimers that integrate both high mechanical properties and complete recyclability is still an abiding challenge owing to the conventional trade-off between permanent mechanical strength and network adaptability. In this study, biobased polyurethane vitrimers are synthesized using castor o...
Sourav Ghosh, Sunidhi Mishra, Sushmit Sen et al.· ACS Applied Polymer Material...· 0 citations
Developing polyurethane (PU) elastomers that simultaneously combine high strength, toughness, and wear resistance remains challenging. Here, PU elastomers were prepared from polycarbonate diol and hexamethylene diisocyanate using mixtures of N,N′-bis(2-hydroxyethyl)oxamide (BHO), a hydroxyl-functional chain extender,...
Xiao-Yue Wang, Song Li, Xin-Rui Zhang et al.· ACS Applied Polymer Material...· 0 citations
Poly(lactic acid) (PLA) is a commercially important biodegradable polymer, yet its inherent brittleness and poor compatibility with flexible biodegradable polyesters limit its application in mechanically demanding products. In this study, the interfacial compatibilization of immiscible PLA/poly(butylene adipate‐co‐tere...
A. Satdive, Chrisweil Patel, S. Mestry et al.· Polymers for Advanced Techno...· 0 citations
The pursuit of high-performance thermosets and carbon fiber reinforced polymers (CFRPs) with enhanced sustainability is hampered by a tradeoff: performance or recyclability. Here we explore a novel bio-based formulation utilizing disulfide and silyl ether chemistries (DVSS50SiO50) alongside the mono-dynamic resins. Car...
William E. Dyer, N. Lorenz, B. Kumru et al.· ChemSusChem· 0 citations
Traditional petroleum-based thermosetting polybenzoxazines face significant environmental challenges due to their nonrecyclability and dependence on fossil resources. In this study, a series of fully biobased, imine-cross-linked polybisbenzoxazine networks (VD-Cx) were successfully synthesized using a vanillin-derive...
