Polybutylene terephthalate (PBT) blends and composites: A review

Abstract Polybutylene terephthalate (PBT) is a semicrystalline thermoplastic material, which is a member of the polyester family. It has excellent thermal and flow properties, high stiffness, and strength, which make it a good choice for combining various polymers. Various blends and composites of PBT are majorly prepared by melt blending like PBT/polypropylene (PP), PBT/PC and PBT/epoxy are examples of polybutylene terephthalate combinations. The compatibilizer plays a crucial role in blending and PBT grafted with the main ingredients utilized in PBT mixes to increase adhesion between the phases are epoxies, acrylic acid, and maleic anhydride. PBT can be reinforced with powder fillers and fibers to make polymer composites. PBT blends and composites have applications in the automotive industry, aerospace, electronics, consumer goods, etc. Due to an increasing enviornmental concern, research is being carried out for biobased PBT blends and composites.