The spectrum of grafted polypropylene, compared to
that of neat polypropylene, shows the appearance of an
absorption band at 1790 cm1. This band, which is
attributed to the symmetric and asymmetric stretching
vibration of C]O group, proves that the grafting took
place. It can be noted that C. Nakason has reported the
formation of graft copolymer of polypropylene and maleic
anhydride but using a high concentration of the monomer
(7%)