TY - JOUR
T1 - Investigation of chain dynamics in poly(n-alkyl methacrylate)s by solid-state NMR : comparison with poly(n-alkyl acrylate)s
AU - Gaborieau, Marianne
AU - Graf, Robert
AU - Spiess, Hans Wolfgang
PY - 2008
Y1 - 2008
N2 - PnAMAs exhibit a local nanophase separation associated with intriguing chain dynamics (Macromol. Chem. Phys. 2005, 206, 142). PnAMAs of high molar mass, as determined by SEC and MHKS parameters, were investigated in the melt with a recently-developed solid-state NMR method (NOE with dipolar filter; Solid State Nucl. Magn. Res. 2005, 28, 160). The correlation times are assigned to the relaxation of the alkyl nanodomains, as coupled motions of the main chain and hindered local modes in the side chain. Comparison with poly(n-alkyl acrylates) shows a higher anisotropy of the main chain motions and a better organized local nanophase separation in PnAMAs.
AB - PnAMAs exhibit a local nanophase separation associated with intriguing chain dynamics (Macromol. Chem. Phys. 2005, 206, 142). PnAMAs of high molar mass, as determined by SEC and MHKS parameters, were investigated in the melt with a recently-developed solid-state NMR method (NOE with dipolar filter; Solid State Nucl. Magn. Res. 2005, 28, 160). The correlation times are assigned to the relaxation of the alkyl nanodomains, as coupled motions of the main chain and hindered local modes in the side chain. Comparison with poly(n-alkyl acrylates) shows a higher anisotropy of the main chain motions and a better organized local nanophase separation in PnAMAs.
KW - polymers
KW - nuclear magnetic resonance
UR - http://handle.uws.edu.au:8081/1959.7/504846
M3 - Article
SN - 1022-1352
VL - 209
SP - 2078
EP - 2086
JO - Macromolecular Chemistry and Physics
JF - Macromolecular Chemistry and Physics
IS - 20
ER -