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Segmented Block Copolymers with Monodisperse Hard Segments: The Influence of H‐Bonding on Various Properties
Author(s) -
Biemond Gerard J. E.,
Feijen Jan,
Gaymans Reinoud J.
Publication year - 2009
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200900093
Subject(s) - materials science , copolymer , dispersity , glass transition , ultimate tensile strength , composite material , small angle x ray scattering , hydrogen bond , dynamic mechanical analysis , polymer , modulus , polymer chemistry , molecule , scattering , organic chemistry , chemistry , physics , optics
Abstract 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 ( T g , −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.