Sorption Energy of Water Molecules Sorbed into Polymers and Their Molecular Motions

Abstract

For the water sorption of polymers, an intimate relation has been found between the water sorption energy (ΔE) and water correlation time (τ_c) measured by FT-IR and NMR, respectively: τ_c=A exp (BΔE). This reveals that FT-IR and NMR observe the static and dynamic phenomena due to the intermolecular interaction between polymer and water molecules.