ANALYSIS OF POLYMER MATERIALS BY SURFACE NMR VIA THE MOUSE

Applications are discussed of a novel NMR device, the NMR MOUSE (mobil e universal surface explorer), for characterization of polymers. Diffe rent properties of elastomers can be related to an effective transvers e relaxation parameter T-2eff. Effects of multiecho sequences influenc e the decay curve and can be described in terms of B-0 inhomogeneity a nd spin-lock effects. Furthermore, the signal-to-noise ratio (SIN) can be improved by use of steady-state free precession (SSFP) pulse seque nces modified for use in inhomogeneous magnetic fields. (C) 1998 Acade mic Press.