Effect of the uniaxial mechanical extension of polyvinylidene fluoride films on their phase composition and carbonization degree

Using the IR-spectroscopy method the quantitative analysis of the phase contest of films of the partially crystalline PVDF planes was carried out. Increase of amorphous phase caused by uniaxial mechanical extension of the film has been observed. In the course of the following chemical carbonization the part of the amorphous component in the stretched films decreases. IR measurements a month later the chemical treatment show a further drop in the amorphous phase content during carbonized films storage. In the IR region corresponding to the double carbon-carbon bonds absorption storage of the films for a month modifies spectra shape while the integral intensity of the remains practically constant.