http://www.cnr.it/ontology/cnr/individuo/prodotto/ID232215
13C Solid State NMR determination of crosslinking degree in super-absorbing cellulose based networks (Articolo in rivista)
- Type
- Label
- 13C Solid State NMR determination of crosslinking degree in super-absorbing cellulose based networks (Articolo in rivista) (literal)
- Anno
- 2000-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1021/ma9914117 (literal)
- Alternative label
D. Capitani, M.A. Del Nobile, G. Mensitieri, A. Sannino, A.L. Segre (2000)
13C Solid State NMR determination of crosslinking degree in super-absorbing cellulose based networks
in Macromolecules (Print)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- D. Capitani, M.A. Del Nobile, G. Mensitieri, A. Sannino, A.L. Segre (literal)
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- http://dx.doi.org/10.1021/ma9914117 (literal)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
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- ISI Web of Science (WOS) (literal)
- Scopu (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Istituto di Metodologie Chimiche
Dipartimento di Ingegneria dei Materiali, Università di Napoli Federico II, Napoli
Istituto per i material compositi e biomedici (literal)
- Titolo
- 13C Solid State NMR determination of crosslinking degree in super-absorbing cellulose based networks (literal)
- Abstract
- C-13 solid-state NMR analysis has been performed on microporous superabsorbing networks based on hydroxyethylcellulose and sodium salt of carboxymethylcellulose in order to determine the chemically effective cross-linking degree. Microporous samples characterized by two different degrees of cross-link have been analyzed by performing C-13 cross-polarization magic angle spinning (CP-MAS) solid-state spectra and single-pulse excitation (SPE) experiments. Cross-linking degrees, expressed as number of cross-links per monomer, have been evaluated from the area of resonance due to methylene carbon atoms present on reacted cross-linker molecule (divinyl sulfone) and area of resonances due to anomeric carbon atoms C-l of the polysaccharide rings. Optimization procedures for both CP-MAS and SPE experiments are also reported. (literal)
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