STUDY ON PREPARATION, CHARACTERIZATION AND ELECTRICAL PROPERTY OF DEHYDROFLUORINATED POLY(VINYLIDENE FLUORIDE) FILM

The reactions of poly(vinylidene fluoride) (PVDF) film with some organ ic weak bases produce dehydrofluorinated product-polyfluorinated acety lene(PFA) on the two surfaces of the film. An orderly conjugated struc ture of the dehydrofluorinated film is suggested by IR and UV-VIS spec tra. Investigations by XPS, reaction depth and contact - angle hystere sis indicated that the two surfaces of PVDF film are the main reaction site. The conductivity of the dehydrofluorinated PVDF films are raise d 5 similar to 6 magnitude of orders after doping by various dopants. The maximum value reaches 10(-4) S/cm. The doping behavior of the dehy drofluorinated PVDF film is different from that of polyacetylene.