Water Interactions with Crystalline Polymers with Large Dipoles

摘要: We compare the interactions of water with ferroelectric copolymer poly(vinylidene fluoride(PVDF) – trifluoroethylene (TrFE)) and poly(methylvinylidenecyanide) (PMCV), a stronglydipole ordered polymer. At microscopic scale, dipole matter affect thesurface chemistry at these polymer surfaces, as does lattice strain caused by absorption.Light polarization dependent photo-assisted thermal desorption helps demonstrate that waterdesorption from surface bulk can be influenced formation electronic metastablestates. Changes in local orientation long lived metastable statesaffect strength coupling between dipoles molecules ofthe fluoride –trifluoroethylene) but effects were not observedfor poly(methylvinylidenecyanide).