Instituto de MacrornoIi.culas/UFRJ, RJ, Brazil, CP 68525; 'DTQ/IQ/UFRRJ, RJ, Brazil SYNOPSIS Samples of Nylon G/poly(propylene oxide), with poly(propy1ene oxide) (PPO) content varying up to 35%, have been examined using thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and nuclear magnetic resonance (NMR) carbon-13 at solidstate. Carbon-13 spectra were measured by cross-polarization (CP), magic angle spinning (MAS), and high-power hydrogen decoupling (HPHD). The variation contact time experiment and MAS technique were also determined. The data are discussed in terms of compatibility and plasticization of the samples. 0