Journal
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS
Volume 222, Issue 5-6, Pages 755-778Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1524/zpch.2008.6007
Keywords
ferroelectric copolymer; PVDF; TrFE; large dipoles
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We compare the interactions of water with the ferroelectric copolymer poly(vinylidene fluoride (PVDF) - trifluoroethylene (TrFE)) and poly(methylvinylidenecyanide) (PMCV), a strongly dipole ordered polymer. At the microscopic scale, dipole interactions matter and affect the surface chemistry at these polymer surfaces, its does lattice strain caused by water absorption. Light polarization dependent photo-assisted thermal desorption helps demonstrate that water desorption from surface and bulk can be influenced by the formation of electronic metastable states. Changes in local dipole orientation and the formation of long lived metastable states affect the strength of the coupling between the dipoles of water molecules and the dipoles of the copolymer poly(vinylidene fluoride - trifluoroethylene) but these effects were not observed for poly(methylvinylidenecyanide).
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