najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2021-12-4-520-527najo-504Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХTuning of interfacial interactions in poly(isoprene) ferroelastomer by surface modification of embedded metallic iron nanoparticlesНастройка межфазных взаимодействий в поли(изопреновом) ферроэластомере путем модификации поверхности внедренных наночастиц металлического железаSafronovA. P.SafronovA. P.

19, Mira Str., Yekaterinburg,  620002;

106, Amundsen Str., Yekaterinburg, 620016.

alexander.safronov@urfu.ruTerziyanT. V.TerziyanT. V.

19, Mira Str., Yekaterinburg, 620002.

tatiana.terzian@urfu.ruPetrovA. V.PetrovA. V.

7, Schorsa Str., Yekaterinburg, 620142.

avp@labural.comBeketovI. V.BeketovI. V.

19, Mira Str., Yekaterinburg,  620002;

106, Amundsen Str., Yekaterinburg, 620016.

beketov@iep.uran.ruUral Federal University, Institute of Natural Sciences and Mathematics; Institute of Electrophysics UB RASRussian FederationUral Federal University, Institute of Natural Sciences and MathematicsRussian FederationUralplast LLCRussian Federation202104082025124520527Copyright © Safronov A.P., Terziyan T.V., Petrov A.V., Beketov I.V., 20252025Safronov A.P., Terziyan T.V., Petrov A.V., Beketov I.V.Safronov A.P., Terziyan T.V., Petrov A.V., Beketov I.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/504

Zero-valent metallic iron nanoparticles (NPs) with modified surface were embedded in poly(isoprene) (PI) and the enthalpy of interfacial adhesion in resulted ferroelastomers was evaluated. Iron NPs were synthesized by the method of electrical explosion of wire (EEW) in inert gas. Modification of their surface was performed by the in situ liquid treatment of the active condensed NPs in the EEW installation. The enthalpy of mixing of poly(isoprene) with Fe NPs was determined using thermochemical cycle based on the isothermal calorimetry measurement of the enthalpy of dissolution of PI/Fe composites in chloroform at 25◦C. Using these values the enthalpy of adhesion of PI to the surface of modified Fe NPs was evaluated using Langmuir-type isotherm. It was shown that the enthalpy of adhesion strongly depends on the properties of the surface of Fe NPs and its modification. It was the lowest in the case of oxidized Fe NPs and the highest for Fe NPs which surface was modified by pre-deposited polymeric shells.

Наночастицы (НЧ) нульвалентного металлического железа с модифицированной поверхностью были внедрены в поли(изопрен) (ПИ) и оценена энтальпия межфазной адгезии полученных ферроэластомеров. НЧ железа были синтезированы методом электрического взрыва проволоки (ЭВП) в инертном газе. Модификацию их поверхности проводили жидкостной обработкой активных конденсированных НЧ in situ на установке ЭВП. Энтальпию смешения поли(изопрена) с НЧ Fe определяли по термохимическому циклу, основанному на изотермическом калориметрическом измерении энтальпии растворения композитов PI/Fe в хлороформе при 25°C. По этим значениям оценивали энтальпию адгезии ПИ к поверхности модифицированных НЧ Fe с использованием изотермы Ленгмюра. Показано, что энтальпия адгезии сильно зависит от свойств поверхности НЧ Fe и ее модификации. Она была наименьшей в случае окисленных НЧ Fe и наибольшей для НЧ Fe, поверхность которых была модифицирована предварительно нанесенными полимерными оболочками.

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The authors declare that there are no conflicts of interest present.