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Length scales in heterogeneous polymers from solid state NMR
Author(s) -
Spiess H. W.
Publication year - 1997
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19971170129
Subject(s) - mesoscopic physics , polymer , materials science , amorphous solid , solid state nuclear magnetic resonance , nuclear magnetic resonance spectroscopy , spin diffusion , chemical physics , elastomer , necking , copolymer , length scale , phase (matter) , diffusion , nuclear magnetic resonance , chemistry , physics , crystallography , composite material , organic chemistry , thermodynamics , condensed matter physics , quantum mechanics
New methods for probing structure and dynamics of heterogeneous polymers by multidimensional nuclear magnetic resonance (NMR) are described. On the molecular level high resolution multiple quantum spectroscopy of solids probes connectivities of different functional groups on length scales below 1 nm. On a mesoscopic scale NMR spin diffusion techniques probe phase separation and interfacial effects in polymer blends and block copolymers. On a macroscopic scale NMR imaging techniques allow to spatially resolve differences in order and mobility in the necking region or in shearbands of deformed polymers. The techniques are illustrated with amorphous polymers, elastomers, and core‐shell systems.