The main goal of this work is to study the cationic polymerization of terpènes, particularly alpha pinène oxide with heterogeneous catalyst maghnite H + . In order to find the optimal reaction conditions and improve the productivity of poly ( α -pinene oxide) we studied the influence of the amou nt of catalyst, time, temperature and solvent on th e yield. The resulting polymers were characterized by different analysis methods: 1H NMR and infrared sp ectroscopy (IR) confirmed the structures of the synthesized pr oducts.