R. Giordano et al., DIFFUSIVE MOTION AND H-BOND EFFECTS ON LIQUID POLY(ETHYLENE OXIDE) AND ON ITS AQUEOUS-SOLUTIONS, Physica. B, Condensed matter, 213, 1995, pp. 514-517
An incoherent quasi-elastic neutron scattering experiment on pure poly
mers and on polymeric aqueous solutions is reported. The high resoluti
on of the IRIS spectrometer (7 mu eV) allows us to observe the diffusi
ve motion of the pure polymer centre of mass, as well as the confined
water motion within the polymer chain. The important role of the polym
er-water interaction (H-bond) in the characterization of these liquid
systems is also studied and analyzed.