A new method for the synthesis of sulfonated polynaphthylimides

Autor: Yu. A. Dobrovol’skii, M. G. Bugaenko, Mikhail D. Dutov, Svyatoslav A. Shevelev, Olga V. Serushkina, A. V. Pisareva, A. L. Rusanov, E. G. Bulycheva
Rok vydání: 2013
Předmět:
Zdroj: Polymer Science Series B. 55:478-483
ISSN: 1555-6123
1560-0904
DOI: 10.1134/s1560090413070026
Popis: A new method for the synthesis of sulfonated polynaphthylimides has been developed on the basis of the postsulfonation of high-molecular-mass polynaphthylimides with a sulfuric acid-oleum mixture. Sulfonated polymers of this type have been obtained from the polycondensation products of 5-phenylthiophenylene-1,3-diamine with dianhydrides of 1,4,5,8-naphthalenetetracarboxylic acid and 4,4′-(1,4-phenylenedicarbonyl)-bis-naphthalene-1,8-dicarboxylic acid. It has been shown that hydrogen peroxide oxidation of sulfide bridge groups of these polymers in an acidic medium yields high-molecular-mass compounds that contain sulfonic bridge fragments and, therefore, have increased thermal stabilities and enhanced proton conductivities.
Databáze: OpenAIRE