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

机译:偶氮芳族TEMPO衍生物接枝到聚烯烃之前和之后的结构,热和光物理数据

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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.
机译:本文报道的数据与4-(苯基偶氮)-苯甲酰基-2,2,6,6-四甲基哌啶-1-氧基(AzO-TEMPO)和4-(2-噻吩基偶氮)的特征互补)-苯甲酰基-2,2,6,6-四甲基哌啶-1-氧基(ThiO-TEMPO)接枝到两种聚乙烯基体(乙烯/α-烯烃共聚物(co-EO)和高密度聚乙烯)之前和之后(HDPE))。特别是,本文报道的数据证实了RO-TEMPO衍生物接枝前后的结构(FT-IR分析),热(TGA和EPR)和光物理(UV-vis)特性。在此,将ThiO-TEMPO的FT-IR光谱和TGA热分析图与AzO-TEMPO的进行了比较。此外,据报道,在366或254 nm发射灯下,AzO-TEMPO和ThiO-TEMPO在乙腈溶液中辐照期间收集的UV-vis光谱的叠加。最后,显示了功能化PO的完整DSC特性。

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