Telechelic poly(thio‐1,4‐phenylene)s and poly(thio‐1,4‐phenylene)‐<i>block</i>‐polyamides

Abstract

Abstract Poly(thio‐1,4‐phenylene)s (PPS) 5a–d with reactive end groups like carboxyl, nitro, cyano and aldehyde groups were synthesized under high as well as atmospheric pressure. Carboxyl terminated telechelics 5a were used as starting materials for the synthesis of poly(thio‐1,4‐phenylene)‐ block ‐polyamides. Semicrystalline and amorphous polyamides like Nylon 6 and Trogamide® served as coblocks. The formation of block copolymers was approved by the solubility behavior, the NMR and IR spectra as well as high temperature GPC. The thermal stability increases with the fraction of PPS. By DSC, phase separation of the block copolymers was observed at certain compositions and molecular weights.