Structural, thermal and photo-physical data of azo-aromatic TEMPO derivatives before and after their grafting to polyolefins

摘要

The data reported in this paper are complementary to the char- acterization of 4-(phenylazo)-benzoyl-2,2,6,6-tetramethylpiperidine- 1-oxyl radical (AzO-TEMPO) and of the 4-(2-thienylazo)-benzoyl- 2,2,6,6-tetramethylpiperidine-1-oxyl radical (ThiO-TEMPO) before and after their grafting to two polyethylene matrices (a copolymer ethylene/α-olefin (co-EO) and a high density polyethylene (HDPE)). Particularly the data reported in this paper confirm the structure (FT- IR analysis), the thermal (TGA and EPR) and the photo-physical (UV– vis) properties of the RO-TEMPO derivatives before and after their grafting. Herein, the FT-IR spectrum and TGA thermogram of ThiO- TEMPO were compared with those of AzO-TEMPO. Moreover, the superimposition of UV–vis spectra collected during the irradiation under 366 or 254 nm emitting lamp of AzO-TEMPO and ThiO-TEMPO in acetonitrile solution are reported. Finally, a complete DSC char- acterization of the functionalized POs is shown.