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

Autor: Serena Coiai 1, Francesca Cicogna 1, Chengcheng Yang 1, Veronika Tempesti 1, Sabrina Carola Carroccio 2, 3, Giuliana Gorrasi 4, Raniero Mendichi 5, Nadka Tz. Dintcheva 6, Elisa Passaglia 1
Přispěvatelé: Coiai, S., Cicogna, F., Yang, C., Tempesti, V., Carroccio, S., Gorrasi, G., Mendichi, R., Dintcheva, Passaglia, E.
Rok vydání: 2017
Předmět:
Zdroj: Polymers; Volume 9; Issue 12; Pages: 670
Polymers
Polymers (Basel) 9 (2017). doi:10.3390/polym9120670
info:cnr-pdr/source/autori:Serena Coiai 1, Francesca Cicogna 1,* Chengcheng Yang 1, Veronika Tempesti 1, Sabrina Carola Carroccio 2,3, Giuliana Gorrasi 4, Raniero Mendichi 5, Nadka Tz. Dintcheva 6 and Elisa Passaglia 1/titolo:Grafting of Hindered Phenol Groups onto Ethylene%2F?-Olefin Copolymer by Nitroxide Radical Coupling/doi:10.3390%2Fpolym9120670/rivista:Polymers (Basel)/anno:2017/pagina_da:/pagina_a:/intervallo_pagine:/volume:9
Polymers, Vol 9, Iss 12, p 670 (2017)
ISSN: 2073-4360
DOI: 10.3390/polym9120670
Popis: 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.
Databáze: OpenAIRE
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