Grafting of Hindered Phenol Groups onto Ethylene/α-Olefin Copolymer by Nitroxide Radical Coupling

被引：14

作者：

Coiai, Serena ^{[1
]}

Cicogna, Francesca ^{[1
]}

Yang, Chengcheng ^{[1
]}

Tempesti, Veronika ^{[1
]}

Carroccio, Sabrina Carola ^{[2
,3
]}

Gorrasi, Giuliana ^{[4
]}

Mendichi, Raniero ^{[5
]}

Dintcheva, Nadka Tz. ^{[6
]}

Passaglia, Elisa ^{[1
]}

机构：

[1] CNR, SS Pisa, ICCOM, Via G Moruzzi 1, I-56124 Pisa, Italy

[2] CNR, SS Catania, IPCB, Via P Gaifami 18, I-95126 Catania, Italy

[3] Univ Catania, CNR, SS Catania, IMM, Via S Sofia 64, I-95123 Catania, Italy

[4] Univ Salerno, Dipartimento Ingn Ind, Via Giovanni Paolo 2,132, I-84084 Fisciano, SA, Italy

[5] CNR, Ist Studio Macromol ISMAC, Via A Corti 12, I-20133 Milan, Italy

[6] Univ Palermo, Dipartimento Ingn Civile Ambientale Aerosp Mat, Viale Sci,Ed 6, I-90128 Palermo, Italy

来源：

POLYMERS | 2017年 / 9卷 / 12期

关键词：

antioxidant covalent immobilization; nitroxide radical coupling; hindered phenol moiety; HAS-NOR antioxidant; OXIDATION INDUCTION TIME; LONG-TERM STABILIZATION; AMINE LIGHT STABILIZERS; OF-THE-ART; POSTREACTOR MODIFICATION; FUNCTIONAL NITROXIDES; DENSITY POLYETHYLENE; ANTIOXIDANT ACTION; THERMAL-OXIDATION; CROSS-LINKING;

D O I：

10.3390/polym9120670

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The covalent immobilization of hindered phenol groups, with potential antioxidant activity, onto an ethylene/-olefin (EOC) copolymer was carried out by the nitroxide radical coupling (NRC) reaction performed in the melt with a peroxide and the 3,5-di-tert-butyl-4-hydroxybenzoyl-2,2,6,6-tetramethylpiperidine-1-oxyl radical (BHB-T). Functionalized EOC (EOC-g-(BHB-T)) was exposed to photo- and thermo-oxidation. By comparison with some model compounds bearing the (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO) moiety or the hindered phenol unit, it was observed that the grafted BHB-T could effectively help the stabilization of the polymer matrix both under photo- and thermo-oxidation. In addition, the immobilization of BHB-T can effectively increase the service life of the functionalized polymers when polymer films were put in contact with ethanol solution thus simulating a possible application of the modified polymer.

引用

页数：19

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