Study on biodegradable aromatic/aliphatic copolyesters

Abstract

Progress on biodegradable aromatic/aliphatic copolyesters based on aliphatic and aromatic diacids, diols and ester monomers was reviewed. The aromatic/aliphatic copolyesters combined excellent mechanical properties with biodegradability. Physical properties and biodegradability of copolyesters varied with chain length of the aliphatic polyester segment and atacticity of copolyesters. The processability of copolyesters could be improved significantly after incorporating a stiff chain segment through copolymerization of aliphatic polyesters with an aromatic liquid crystal element. The aromatic/aliphatic copolyesters as a new type of biodegradable materials could replace some general plastics in certain applications, namely biomedical and environmental friendly fields

Synthesis of Bifunctional Monomers by the Palladium‐Catalyzed Carbonylation of Cardanol and its Derivatives

“…One potential way to manufacture halogen‐free fire‐retardant polymers is to incorporate significant amounts of aromatic groups into the polymer backbone . However, all‐aromatic polymers are difficult to process, so linking them with oligomethylene chains and/or ester functions could offer fire‐retardancy and processability …”

Nucleation and crystallization of random aliphatic-butylene terephtalate copolyester

“…The latter consists mainly of synthetic aliphatic polyesters such as: poly(e-caprolactone) (PCL) [5], polylactide (PLA) [6], poly(butylene succinate) (PBS) [7] and poly(butylene adipate) (PBA) [8]. Their mechanical properties are not adequate for many applications, thus the aromatic units were introduced into main chains to create more mechanically resistant copolymers [9,10], which, nevertheless, remain biodegradable.…”

Interferometric determination of the birefringence of thermo‐tropic polyester fibers and its copolymers of structure (PCPT‐co‐CPO)

“…Also, these properties tend to be anisotropic due to the fact that rigid chain thermotropic polyester unlike conventional polymers with chain folded lamellar crystals, tend to remain in an aligned structure even upon melting 2. Researchers interested in thermotropic polyesters concerned to the relation between the chemical structure and transition temperatures, but now there is a growing emphasis on characterization of physical structure 3–8…”