Structural characterization of maleic anhydride grafted polyethylene by 13C NMR spectroscopy

Maleic anhydride grafted polyethylene, [2,3-13C2] MA-g-PE, which was synthesized with 13C labeled maleic anhydride [2,3-13C2] MA in solution, was characterized by 13C NMR spectroscopy in order to make clear the structure of graft groups. The results reveal that [2,3-13C2] MA-g-PE has succinic anhydride oligomeric grafts with a terminal unsaturated MA ring in addition to well-known saturated succinic anhydride oligomeric grafts and that the former grafts are longer but fewer than the latter.