Multiblock polyester elastomers/zinc oxide composites: Preparation and characterization

Abstract

In this study, composites were obtained by introducing the zinc oxide (ZnO) fillers into the block copolymers of poly(butylene terephthalate) (PBT) and poly(tetramethylene oxide) (PTMO) by melt compounding method. The thermal conductivity and coefficient of thermal expansion of composites were investigated as a function of ZnO size and concentration. It was found that addition of ZnO increased thermal stability, while it decreased coefficient of thermal expansion of the composites at low temperatures (55 to 70 °C).