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@ARTICLE{Baeza:825137,
      author       = {Baeza, Guilhem P. and Sharma, Ashwinikumar and Louhichi,
                      Ameur and Imperiali, Luna and Appel, Wilco P. J. and Fitié,
                      Carel F. C. and Lettinga, M.P. and Van Ruymbeke, Evelyne and
                      Vlassopoulos, Dimitris},
      title        = {{M}ultiscale organization of thermoplastic elastomers with
                      varying content of hard segments},
      journal      = {Polymer},
      volume       = {107},
      issn         = {0032-3861},
      address      = {Oxford},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2016-07614},
      pages        = {89 - 101},
      year         = {2016},
      abstract     = {Thermoplastic elastomers (TPEs) based on segmented
                      block-copolymers containing poly(tetrahydrofuran) (pTHF) and
                      terephthalate-based diamide groups (T4T) were synthesized
                      via polycondensation. While pTHF is known to be flexible and
                      amorphous at rest, the more rigid T4T crystallized in
                      different ways depending on both chain composition and
                      sample preparation conditions. Increasing the content of
                      hard-segments (HS) from 5 to $20\%$ in weight leads to a
                      substantial increase of the melting point Tm by more than 60
                      °C. We have systematically investigated the multiscale (1
                      Å - 50 nm) organization of the HSs (of fractions from $5\%$
                      to $20\%)$ by means of DSC, WAXS and (ultra) small angle
                      X-ray scattering (U)SAXS. By increasing HS content, hence
                      the rigidity of the chain, scattering experiments
                      unambiguously show the formation of bigger and better
                      defined ribbon-like crystallites, as well as the
                      densification of the network they form. We propose a
                      scenario for rationalizing the local T4T-HSs packing and the
                      crystallites anisotropy at the mesoscale (1–10 nm) for HS
                      fraction above $5\%.$ Moreover, following in-situ the
                      crystallization of TPEs with large HS fraction $(20\%),$ we
                      highlight the presence of “persistent aggregates”
                      present at T > Tm and study the ribbon-like crystallites
                      growth mechanism during cooling from the melt state.},
      cin          = {ICS-3},
      ddc          = {540},
      cid          = {I:(DE-Juel1)ICS-3-20110106},
      pnm          = {551 - Functional Macromolecules and Complexes (POF3-551)},
      pid          = {G:(DE-HGF)POF3-551},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000389765500011},
      doi          = {10.1016/j.polymer.2016.11.010},
      url          = {https://juser.fz-juelich.de/record/825137},
}