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Development of Polyethersulfones for Modification of Epoxy Resinsстатья Исследовательская статья
- Авторы: Storozhuk I.P., Bulkatov D.P., Khina A.G., Buryakov V.S., Kuleznev A.S., Orlov M.A.
- Журнал: Polymer Science, Series B
- Год издания: 2025
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- DOI: 10.1134/s1560090424601481
- Аннотация: 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.
- Добавил в систему: Хина Александр Григорьевич