Characterization of polyalkylvinyl ether phases by solid-state and suspended-state nuclear magnetic resonance investigations

Citation
S. Bachmann et al., Characterization of polyalkylvinyl ether phases by solid-state and suspended-state nuclear magnetic resonance investigations, SOL ST NUCL, 17(1-4), 2000, pp. 39-51
Citations number
29
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
SOLID STATE NUCLEAR MAGNETIC RESONANCE
ISSN journal
0926-2040 → ACNP
Volume
17
Issue
1-4
Year of publication
2000
Pages
39 - 51
Database
ISI
SICI code
0926-2040(2000)17:1-4<39:COPEPB>2.0.ZU;2-Q
Abstract
using different ratios and compositions of n-butylvinyl ether (C2VE) and n- octadecylvinyl ether (C18VE) with triethylene glycol divinyl ether or divin ylbenzene as crosslinkers, respectively. These phases were investigated by means of solid-state C-13 cross-polarization magic angle spinning nuclear m agnetic resonance (NMR) spectroscopy and H-1 high-resolution magic angle sp inning (HR MAS) NMR spectroscopy in suspended-state. A comparison of these two methods showed the substantial advantages of 1H HR MAS NMR measurements . Structure elucidation was achieved using a 2D H,H-COSY NMR experiment per formed under MAS conditions enabling full peak assignment of the]H NMR spec tra of these phases. The dynamic behavior of the polyalkylvinyl ether phase s was determined by employing temperature-dependent measurements of spin-la ttice relaxation times (T-1) as well as accumulation of a 2D wide line sepa ration NMR spectrum. (C) 2000 Academic Press.