Abstract
The structure and dynamic motions of the polycarbodimide was studied by 13C cross-polarization magic-angle spinning (CP/MAS) NMR. From these results, the structure of the polycarbodimide was confirmed, and the 13C spin-lattice relaxation times were measured in the rotating frame. The main-chain carbon of polycarbodimide has a higher activation energy, 19.76 kJ/mol, than the analogous polymers with the helix previously reported. The T 1p values of carbons outside the side-chain show gradually increasing values. This suggests that the side chains have additional mobility arising from internal rotation: this increase is due to the greater mobility of side chain towards its free end.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
