Abstract:

1D/2D ¹H and ¹³C NMR spectra of solid natural rubber, natural rubber latex and dissolved natural rubber in liquid phase were acquired using a BRUKER high-resolution magic angle spinning (HR/MAS) probe, a BRUKER solution broad bore (BBO) probe and a BRUKER solid CP/MAS probe. The results obtained from the three probes were compared. The results showed that high resolution 1H and 13C spectra could be obtained for solid nature rubber and rubber latex by using the HR/MAS probe, suggesting that the HR/MAS probe, in terms of signal-to-noise ratio and signal line width, is more advantageous than the CP/MAS probe for NMR studies on solid natural rubber.

Key words: NMR, high resolution magic angle spinning (HR/MAS) probe, solid CP/MAS probe, solution BBO probe, natural rubber