The reaction of dehydro-chlorination could occur in the irradiation of electron beam to PVC, but obtained HCI failed to protonate
the quinoidal sites of PANI effectively because of the asynchronous process of film formation and PVC dehydro-chlorination.
 These authors found that sulfuric acid and perchloric acid in solution in anhydrous acetic acid were able to protonate
a variety of weak bases such as ketones and other carbonyl compounds that do not form salts in aqueous solutions of the same acids.
As a first point, the ability of Nafion to protonate
PTA was checked in water solution by [sup.31]P NMR.
The DS was calculated from the difference between these two inflection points which gave the moles of protons needed to protonate
the free amine groups, thus corresponding to the number of glucosamine units of chitosan .
Another reason is that the H atoms in the chloroplatinic acid protonate
N atoms in the PANI chains during the chemical polymerization and enhances the formation of ES conductive form of PANI.
When mineral acids such as hydrochloric acid or hydrobromic acid are added, hydrogen ions protonate
the individual components and the structure falls apart.
As can be seen in Fig.1, besides the formation of N[H.sub.2] groups, the observation of peaks at 1620, 2224 and 2311 [cm.sup.-1] is assigned to the protonate
amino groups (-N[H.sub.3.sup.+]) [23, 24].
One can hypothesize that the protons from TfOH protonate
the aromatic nitrogen bearing the two other chelating rings inducing a conformational change, which is thermodynamically unfavoured, followed by a proton-metal exchange giving more rapidly the [[Cd[(L).sub.2]].sup.2+] complexes.