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, −70 °C), good low-temperature properties, moderate moduli (G′ ≈ 10–33 MPa) and high melting temperatures (185–220 °C). However, as compared to H-bonded segments, both the modulus and the yield stress were relatively low.
- Block copolymers
Biemond, G. J. E., Feijen, J., Gaymans, R. J., & ten Hoopen, H. W. M. (2009). Segmented block copolymers with monodisperse hard segments: the influence of H-bonding on various properties. Macromolecular materials and engineering, 294(8), 492-501. https://doi.org/10.1002/mame.200900093