1 research outputs found
Segmented block copolymers with monodisperse hard segments:the influence of H-bonding on various properties
The properties of segmented-copolymer-based H-bonding and non-H-bonding crystallisable segments and poly(tetramethylene oxide) segments were studied. The crystallisable segments were monodisperse in length and the non-hydrogen-bonding segments were made of tetraamidepiperazineterephthalamide (TPTPT). The polymers were characterised by DSC, FT-IR, SAXS and DMTA. The mechanical properties were studied by tensile, compression set and tensile set measurements. The TPTPT segmented copolymers displayed low glass transition temperatures (Tg, β70βΒ°C), good low-temperature properties, moderate moduli (Gβ²βββ10β33 MPa) and high melting temperatures (185β220βΒ°C). However, as compared to H-bonded segments, both the modulus and the yield stress were relatively low