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

Nadka Tzankova Dintcheva, Chengcheng Yang, Veronika Tempesti, Serena Coiai, Sabrina Carola Carroccio, Francesca Cicogna, Giuliana Gorrasi, Raniero Mendichi, Elisa Passaglia

Risultato della ricerca: Articlepeer review

3 Citazioni (Scopus)

Abstract

The covalent immobilization of hindered phenol groups, with potential antioxidant activity, onto an ethylene/α-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.
Lingua originaleEnglish
pagine (da-a)1-19
Numero di pagine19
RivistaPolymers
Volume9
Stato di pubblicazionePublished - 2017

All Science Journal Classification (ASJC) codes

  • ???subjectarea.asjc.1600.1600???
  • Polymers and Plastics

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