II II

The behaviour of some poly(amido-amine)s either in aqueous solution or grafted on the surface of various materials has been studied by the FTIR technique. Difference spectra of the polymers at different pH's show the presence of different protonated forms. By the same technique the capability of the polymers to form complexes with Cu(II) ion has also been evaluated. Transmittance and ATR FTIR techniques are used for monitoring each chemical step in grafting poly(amido-amine)s chain on the surface of polyurethanes. The ture