13C and 1H Resonance Assignment of Mercerized Cellulose II by Two-Dimensional MAS NMR Spectroscopies

摘要: Through-bond 13C−13C and 13C−1H correlations in the crystal structure of cellulose II were determined by two-dimensional (2D) refocused INADEQUATE MAS-J-HMQC spectra mercerized cellulose, which was biosynthesized Acetobacter xylinum ATCC 10245 from uniformly labeled glucose (d-(U-13C6)glucose). Mercerization bacterial achieved a solution 20% NaOH water for 2 weeks. In 2D spectrum II, two sets through-bond connectivities C1 through C6 clearly observed, enabled us to completely assign complex 1D CP/MAS 13C II. Following assignment, 1H resonance proton(s) attached each carbon could be assigned use cellulose.