1 Ocak 1994 Dergi makalesi Açık Erişim

STRIBECK, N; APOSTOLOV, AA; ZACHMANN, HG; FAKIROV, C; STAMM, M; FAKIROV, S

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<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>STRIBECK, N</dc:creator>
  <dc:creator>APOSTOLOV, AA</dc:creator>
  <dc:creator>ZACHMANN, HG</dc:creator>
  <dc:creator>FAKIROV, C</dc:creator>
  <dc:creator>STAMM, M</dc:creator>
  <dc:creator>FAKIROV, S</dc:creator>
  <dc:date>1994-01-01</dc:date>
  <dc:description>The scattering behaviour of polyetherester thermoplastic elastomers based on polybutylene terephthalate as hard segments and polyethylene glycol (MBAR(n) = 1000) as soft segments in a ratio 49/51 wt.% is studied under stress.  Drawn (lambda = 5) bristles are annealed with fixed ends in order to create a standard initial structure.  Samples with structure destroyed by additional drawing as well as with structure regenerated by solid-state reactions or chemical crosslinking are prepared.  The data from small-angle x-ray scattering (SAXS) taken under or without stress are evaluated using Stribeck's method and the sizes of crystalline (dBAR1) and amorphous (dBAR2) regions are directly obtained.  A constant value of dBAR1 almost-equal-to 50 angstrom is found for all samples except for the chemically crosslinked one, for which dBAR1 changes at deformations higher than 80% due to axial displacement of the crystallites.  The size of the amorphous regions dBAR2 measured under stress (is-an-element-of &gt; 30-50%) rises slightly and reversibly followed by a drop similarly to the measurements without stress, thus indicating that the observed changes in the LBAR-value are due to changes in the amorphous regions only.  Further, in the chemically crosslinked sample a reversible axial displacement of the crystallites is observed in the range is-an-element-of = 100-200%, suggesting a complete elimination of the interfibrillar contacts as well as stretching and relaxation of intrafibrillar tie molecules.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/104029</dc:identifier>
  <dc:identifier>oai:zenodo.org:104029</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:source>INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS 25(3-4) 185-200</dc:source>
  <dc:title>SMALL-ANGLE X-RAY-SCATTERING OF SEGMENTED BLOCK COPOLYETHERESTERS DURING STRETCHING</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
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