Solid state 1H NMR study of molecular dynamics and domain sizes in PBT with the fullerene derivates: Decylamine–C60 and tetracyanoethylene oxide–C60

Abstract The solid-state 1 H NMR on-resonance and off-resonance techniques have been performed to study molecular dynamics and domain sizes in heterogenous nanocomposites based on poly(butylene terephthalate) and nanoparticles C 60 modified by n -decylamine (DA) or tetracyanoethylene oxide (TCNEO), respectively. The spin-lattice off-resonance relaxation times in the rotating frame T 1ρ off as well as the second moment M 2 of the absorption line were analysed as a function of temperature. To determine the size of heterogeneities and characterize the morphology of the nanocomposites, the 1 H NMR spin-diffusion experiment designed by Goldman–Shen [1,2] was performed. The results from the measurements allow us to investigate the spin-diffusion phenomenon and relaxation behavior of the new nanocomposites.