The CSA patterns arise from the dependence of the chemicalshift
on molecular orientation in an applied static magnetic field.
Therefore, they are sensitive to molecular motions and local
molecular structure. The 13C CSA patterns of the C]O in PMMA and
the C]O.HeO hydrogen-bonded groups in PMMA/PVPh polymer
blends from simulation by quantum chemical-shift calculation and
SUPER NMR spectra at room temperature are shown in Fig. 6. The
corresponding theoretical calculation values (absolute values), 13C
anisotropic chemical-shift tensor (s11, s22 ands33) and isotropic
chemical-shift (siso) of C]O group for the PMMA monomer and
PVPh monomer blend with one hydrogen bond, are listed