The polyperoxides used in this study (Figure ) were obtained via free radical copolymerization of the corresponding monomers in acetone at 60 °C. As initiator, lauryl peroxide was used. The chemical composition of the obtained peroxide copolymers was characterized with 1 H-NMR and FTIR spectroscopy. It was confirmed, that under the chosen conditions, the polymer pending peroxide are stable and are incorporated into the copolymers. The infrared spectra of the peroxide copolymers (Figure ) shows absorption bands at 1860, 1782 and 1707 cm -1 which correspond to the antisymmetric and symmetric C=O stretching of maleic anhydride, respectively (Figure , violet band). The C=O of the ester groups of butyl acrylate yield an intense signal at 1730 cm -1 (Figure ). Signals at 1245 and 1153 cm -1 are attributed to the C-Ostretching of MA and ester, respectively (Figure A, orange band) . The signals at 1435 cm -1 and 753 cm -1 are attributed to the angular deformation of CH2 groups (Figure , blue). The signal at 1364 cm -1 is assigned to skeletal oscillation of -C(CH3)3 and -C(CH3)2 groups adjacent to the peroxide moieties (Figure , green). Other skeletal oscillations at 863 and 925 cm -1 correspond to (CH3)3C-Ogroups (Figure , yellow). Finally, signals at 830 -890 cm -1 can be attributed to peroxide groups in PM (Figure , red) , while the -C≡C-stretching is observed at 630 cm -1 .