Journal of Siberian Federal University. Chemistry / Antioxidant Activity of Sterically Hindered Anilines

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Issue
Journal of Siberian Federal University. Chemistry. 2010 3 (4)
Authors
Lesik, Elena I.; Semichenko, Elena S.; Lesnichev, Aleksei V.; Voronchikhin, Vasilii D.
Contact information
Lesik, Elena I. : Siberian State Technological University , 82 Mira, Krasnoyarsk, 660049 Russia; Semichenko, Elena S. : Siberian State Technological University , 82 Mira, Krasnoyarsk, 660049 Russia; Lesnichev, Aleksei V. : Siberian State Technological University , 82 Mira, Krasnoyarsk, 660049 Russia; Voronchikhin, Vasilii D. : Siberian State Technological University , 82 Mira, Krasnoyarsk, 660049 Russia , e-mail:
Keywords
N; 3; polymers; stabilization; antioxidants; nitrosoaniline; nitrosodiphenylamine; N; 3; 5- trimethyl-4-nitroso-N-phenylaniline
Abstract

We have studied the antioxidant activity of N,3,5-trimethyl-4-nitroso-N-phenylaniline in comparison with industrial antioxidants diphenylamine and p-nitrosodiphenylamine. To evaluate the effectiveness of antioxidants were used the model systems - the solution of isopropylbenzene hydroperoxide in liquid paraffin and a film of 1,4-cis-polyisoprene rubber SKI-3. It is shown that N ,3,5-trimethyl-4-nitroso- N-fenilanilin provides less speed changes in the molecular weight of the polymer in comparison with diphenylamine and PNDFA on 63 and 22 % respectively (during thermal-oxidative aging of elastomers is up to 2 hours at 100 °C). Fixed effect is probably due to the greater stability of phenoxyl radicals of sterically hindered nitrosoaniline.

Pages
403-407
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/2322