Lanthanum complexes copolymerise lactide and δ-valerolactone to produce copolymers with variable microstructures via a selective transesterification mechanism.
Substituted δ-lactones are mostly biobased monomers with unfavorable to intermediate thermodynamic parameters. Nevertheless, they can lead to the synthesis of (co)polyesters by ring-opening (co)polymerization mediated by either organocatalysis or metal-based catalysis.
Synthesis of biodegradable polyesters using the photoinduced ring-opening polymerization (photoROP) technique in the presence of photoacid generators (PAGs) and photobase generators (PBGs) as catalysts.
Degradable aliphatic long-chain polyesters (ALCPEs), obtained from the ROP of macrolactones, have emerged as promising degradable polymers, as they combine the mechanical and thermal properties of polyethylene with the degradability of polyesters.
Edible catalysts, including organic acids and their sodium or potassium salts, have been demonstrated to enable the well-controlled synthesis of biodegradable polyesters, which are environmentally friendly and biomedical polymer materials. Image modified using Google Gemini.