GAO Ling-jie, ZHAO Tian-zheng, LIANG Xiao-tian. THE 13C-NMR RELAXATION STUDY FOR THE POLYURETHANES——Spin-lanttic Relaxation and the Local Segment Motion of Polyurethanes in Solution[J]. Acta Polymerica Sinica, 1990,(4):414-419.
GAO Ling-jie, ZHAO Tian-zheng, LIANG Xiao-tian. THE 13C-NMR RELAXATION STUDY FOR THE POLYURETHANES——Spin-lanttic Relaxation and the Local Segment Motion of Polyurethanes in Solution[J]. Acta Polymerica Sinica, 1990,(4):414-419.DOI:
Detailed carbon-13 NMR spin-lanttic relaxation (T1) measurements have been made for the protoned carbons of polyurethanes (PU) based on polybutyleneadipate diol
4
4'-diphenyl-methane diisocyanate (MDI) and 1
4-butanediol (BDO). The solvent is DMSO-d6 and concentration is 10% (w/v). All of the data were measured on the JEOL FX-600 NMR Spectrometer. The molecular motion of the polyurethanes have been discussed with the experimental data.