NMR evidence for residual dipolar interactions in SBS systems: Influence of a plasticizer on the network structure (Articolo in rivista)

Type
Label
  • NMR evidence for residual dipolar interactions in SBS systems: Influence of a plasticizer on the network structure (Articolo in rivista) (literal)
Anno
  • 2003-01-01T00:00:00+01:00 (literal)
Alternative label
  • Forte C., Pizzanelli S. (2003)
    NMR evidence for residual dipolar interactions in SBS systems: Influence of a plasticizer on the network structure
    in Macromolecules (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Forte C., Pizzanelli S. (literal)
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  • 4004 (literal)
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  • 36 (literal)
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  • Articolo su rivista internazionale. (literal)
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  • ISI Web of Science (WOS) (literal)
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  • CNR (literal)
Titolo
  • NMR evidence for residual dipolar interactions in SBS systems: Influence of a plasticizer on the network structure (literal)
Abstract
  • Evidence for residual dipolar interactions in the polybutadiene domains of two poly(styrene-butadiene- styrene) block copolymers is shown at temperatures ranging from ambient to 90 degreesC. The two copolymers differ for the presence of a plasticizer, selectively compatible with the polybutadiene blocks. The evidence results from the analysis of H-1 transverse magnetization decays, H-1 pseudo-solid echoes, and C-13 edited H-1 spectra. H-1 transverse magnetization decay data can be interpreted using a simplified network model, which provides the number N of statistical segments between cross-links. The analysis of decays and H-1 pseudo-solid echoes shows that the plasticizer induces a lowering of the entanglement density. These results are consistent with the information obtained from the C-13 edited H-1 spectra. (literal)
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