No abstract

The morphology of track membranes based on polyethylene terephthalate and polypropylene with different track diameters and their surface densities were studied by UV, IR, Raman spectroscopy, and scanning electron microscopy (SEM). The SEM method was used to plot the distribution curves of the number of tracks depending on their average size (diameter). Similar distribution curves were obtained using UV and IR spectroscopy. Good agreement was found between the data of independent methods of optical spectroscopy and SEM. It is shown that with an increase in the surface density of tracks, the background elastic scattering in the Raman spectra increases linearly. It is proposed to use the observed effect in the Raman spectra to estimate the surface track density of polymer track membranes.