http://www.cnr.it/ontology/cnr/individuo/prodotto/ID39204
NMR evidence for residual dipolar interactions in SBS systems: Influence of a plasticizer on the network structure (Articolo in rivista)
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- 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)
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- Forte C., Pizzanelli S. (literal)
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- Rivista con impact factor 3.751 (literal)
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- Articolo su rivista internazionale. (literal)
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- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- 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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