Raman spectroscopic studies of polyaniline protonation with bis(2-ethylhexyl) hydrogen phosphate

Protonation of polyaniline with bis(2-ethylhexyl) hydrogen phosphate leads to its plastification. Plasticized polyaniline can be, in turn, thermally processed, which is very important from a technological point of view. Using W-Vis-NIR and Raman spectroscopies we have demonstrated that plasticized polyaniline is effectively protonated with the ester. Raman studies, using different excitation lines (from blue (457.9 nm) to near-infrared (1064 nm)), of polyaniline protonated with bis(2-ethylhexyl) hydrogen phosphate are presented.