Hydrogen-bonded polymer complexes formed from poly(4-hydroxystyrene) and poly(N,N-dimethylacrylamide) were studied by cross-polarization/magic angle spinning laC nuclear magnetic resonance spectroscopy. Evidence for specific interaction was provided by a shift of ~ 3 ppm in the phenolic carbon resonance peak. The proton spin-lattice relaxation times are shorter than the values predicted by a linear model. On the other hand, the rotating frame spin lattice relaxation times, Tip, of the complexes agree with the predictions. The scale of homogeneity is estimated from the Tip data to be ~2.5 nm.
Посилання на статтю:
Hydrogen-bonded polymer complexes / Takuo Suzuki, Eli M. Pearce and T. K. Kwei* // Polymer. – 1992. – Vol 33. – P. 198-201.