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 |
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Přispěvatelé: | Coiai, S., Cicogna, F., Yang, C., Tempesti, V., Carroccio, S., Gorrasi, G., Mendichi, R., Dintcheva, Passaglia, E. |
Rok vydání: | 2017 |
Předmět: |
Ethylene
Polymers and Plastics 02 engineering and technology 010402 general chemistry 01 natural sciences Peroxide Article lcsh:QD241-441 chemistry.chemical_compound lcsh:Organic chemistry nitroxide radical coupling Polymer chemistry Copolymer Moiety antioxidant covalent immobilization chemistry.chemical_classification Olefin fiber hindered phenol moiety Chemistry (all) General Chemistry Polymer 021001 nanoscience & nanotechnology Grafting 0104 chemical sciences chemistry Covalent bond HAS-NOR antioxidant 0210 nano-technology |
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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