I. P. Storozhuk, D. P. Bulkatov, A. G. Khina, V. S. Buryakov, A. S. Kuleznev, M. A. Orlov
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Development of Polyethersulfones for Modification of Epoxy Resins
The synthesis of polyethersulfones of various chemical structures from commercially available starting materials is described. Quantitative characteristics of the dependences of the polycondensation degree and the molecular weight of the obtained polyethersulfones to the reactant ratio have been determined. The dependenses of the heat resistance of the obtained materials on the molecular weight and rigid-chain moieties introduced into the structure of the polymers have been revealed. The effect of the concentration and the reactivity of the end groups of macromolecules on the thermo-oxidative stability of the product polyethersulfones is shown. The particular attention is paid to the synthesis of polyethersulfones with phenolic end groups and a polycondensation degree of n = 25‒30. Such polymers have a high (up to 20 wt %) solubility in epoxy oligomers upon heating without a significant increase in the viscosity of the epoxy resins and do not form an insoluble phase upon binder cooling, thereby opening up broad prospects for their further use as epoxy modifiers.
期刊介绍：
Polymer Science, Series B is a journal published in collaboration with the Russian Academy of Sciences. Series B experimental and theoretical papers and reviews dealing with the synthesis, kinetics, catalysis, and chemical transformations of macromolecules, supramolecular structures, and polymer matrix-based composites (6 issues a year). All journal series present original papers and reviews covering all fundamental aspects of macromolecular science. Contributions should be of marked novelty and interest for a broad readership. Articles may be written in English or Russian regardless of country and nationality of authors. All manuscripts are peer reviewed
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