Abstract
Metal complexes are prepared from poly(oxyethylene glycol) and iron(III) chloride and studied as modifiers of framed aromatic polyurethanes. The latter polymers are synthesized on the basis of macroinitiators, 4,4'-dihydroxy-2,2-diphenylpropane, and polyisocyanate, which is a mixture of 4,4'-diphenylmethane diisocyanate and its branched derivatives. The interaction of iron(III) chloride with poly(oxyethylene glycol) is accompanied by redox processes that lead to its degradation and partial reduction of Fe(III) to Fe(II). Aromatic polyurethanes are modified in the concentration range of metal complexes from 0.5 to 20%. At a concentration of metal complexes of 4–7%, the polymer shows high mechanical characteristics and excellent thermal stability. The framed structure of aromatic polyurethanes hampers the effective contacts of coordinately bonded Fe atoms that are present in various oxidation states.
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Original Russian Text © I.M. Davletbaeva, I.I. Zaripov, R.R. Karimullin, A.M. Gumerov, R.S. Davletbaev, G.V. Burmakina, 2017, published in Vysokomolekulyarnye Soedineniya, Seriya B, 2017, Vol. 59, No. 1, pp. 57–67.
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Davletbaeva, I.M., Zaripov, I.I., Karimullin, R.R. et al. Framed aromatic polyurethanes based on an anionic macroinitiator, 4,4'-diphenylmethane diisocyanate, and 4,4'-dihydroxy-2,2-diphenylpropane: Metal-complex modification. Polym. Sci. Ser. B 59, 69–79 (2017). https://doi.org/10.1134/S1560090417010055
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DOI: https://doi.org/10.1134/S1560090417010055