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@ARTICLE{Zardalidis:825863,
      author       = {Zardalidis, George and Mars, Julian and Allgaier, J. and
                      Mezger, Markus and Richter, Dieter and Floudas, George},
      title        = {{I}nfluence of chain topology on polymer crystallization:
                      poly(ethylene oxide) ({PEO}) rings vs. linear chains},
      journal      = {Soft matter},
      volume       = {12},
      number       = {39},
      issn         = {1744-6848},
      address      = {London},
      publisher    = {Royal Soc. of Chemistry},
      reportid     = {FZJ-2017-00147},
      pages        = {8124 - 8134},
      year         = {2016},
      abstract     = {The absence of entanglements, the more compact structure
                      and the faster diffusion in melts of cyclic poly(ethylene
                      oxide) (PEO) chains have consequences on their
                      crystallization behavior at the lamellar and spherulitic
                      length scales. Rings with molecular weight below the
                      entanglement molecular weight (M < Me), attain the
                      equilibrium configuration composed from twice-folded chains
                      with a lamellar periodicity that is half of the
                      corresponding linear chains. Rings with M > Me undergo
                      distinct step-like conformational changes to a crystalline
                      lamellar with the equilibrium configuration. Rings melt from
                      this configuration in the absence of crystal thickening in
                      sharp contrast to linear chains. In general, rings more
                      easily attain their extended equilibrium configuration due
                      to strained segments and the absence of entanglements. In
                      addition, rings have a higher equilibrium melting
                      temperature. At the level of the spherulitic superstructure,
                      growth rates are much faster for rings reflecting the faster
                      diffusion and more compact structure. With respect to the
                      segmental dynamics in their semi-crystalline state, ring
                      PEOs with a steepness index of ∼34 form some of the
                      “strongest” glasses.},
      cin          = {ICS-1 / Neutronenstreuung ; JCNS-1},
      ddc          = {530},
      cid          = {I:(DE-Juel1)ICS-1-20110106 / I:(DE-Juel1)JCNS-1-20110106},
      pnm          = {551 - Functional Macromolecules and Complexes (POF3-551) /
                      6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
                      / 6215 - Soft Matter, Health and Life Sciences (POF3-621)},
      pid          = {G:(DE-HGF)POF3-551 / G:(DE-HGF)POF3-6G4 /
                      G:(DE-HGF)POF3-6215},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000385489100007},
      doi          = {10.1039/C6SM01622G},
      url          = {https://juser.fz-juelich.de/record/825863},
}