Synthesis and characterization of a new block copolymer: Poly(butylene terephthalate‐co‐olefin) application on PP/PBT blend and PBT homopolymer

The synthesis of a new block copolymer was investigated by the condensation of terephthaloyl chloride, hydrogenated α,ω‐dihydroxy polybutadiene and butanediol. The resulting (PBT) product is termed as the hard segment, and the hydrogenated α,ω‐dihydroxy poly‐butadiene is termed as the corresponding soft segment. This block copolymer was characterized by FTIR, 1 H and 13 C‐NMR, DSC, and SEC. Quantitative estimations of the contents of block segments have been carried out by NMR. The product was used either to increase the properties of PBT/PP blends or the impact strength of PBT. In both cases the mechanical properties are described.