najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2025-16-2-243-249najo-21Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХConducting properties of single-wall carbon nanotubes in composites based on polystyreneПроводящие свойства одностенных углеродных нанотрубок в композитах на основе полистиролаhttps://orcid.org/0000-0002-5034-7665НиколаеваМ. Н.NikolaevaM. N.

Marianna N. Nikolaeva

Bolshoy pr. 31, 199004 St. Petersburg

Mariannan@mail.ruhttps://orcid.org/0000-0002-4823-0695ИваньковаЕ. М.Ivan’kovaE. M.

Elena M. Ivan’kova

Bolshoy pr. 31, 199004 St. Petersburg

ivelen@mail.ruhttps://orcid.org/0000-0003-1052-4919БугровА. Н.BugrovA. N.

Alexander N. Bugrov

Bolshoy pr. 31, 199004 St. Petersburg

Professora Popova 5, 197376 St. Petersburg

alexander.n.bugrov@gmail.comNRC “Kurchatov Institute” – PNPI – IMCRussian FederationNRC “Kurchatov Institute” – PNPI – IMC; Saint Petersburg Electrotechnical University “LETI”Russian Federation202519052025162243249Copyright © Nikolaeva M.N., Ivan’kova E.M., Bugrov A.N., 20252025Николаева М.Н., Иванькова Е.М., Бугров А.Н.Nikolaeva M.N., Ivan’kova E.M., Bugrov A.N.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/21

Composite films were synthesized by radical copolymerization of styrene with methacrylate groups on the surface of modified single-walled carbon nanotubes. Mechanical grinding and reforming of films on the electrode led to a decrease in the electrical resistance values by two magnitude orders. This effect was observed when measuring the current-voltage characteristics in both sandwich and planar structures. This decrease in the electrical resistance of the composite films is likely due to the disintegration and reorientation of carbon nanotubes, as well as the creation of mechanical stresses in them as a result of covalent bonding to the polymer matrix, which could affect the electronic structure of carbon inclusions.

Композитные пленки синтезированы методом радикальной сополимеризации стирола с метакрилатными группами на поверхности модифицированных одностенных углеродных нанотрубок. Их механическое измельчение и переформовка на поверхности электродов привели к снижению значений сопротивления отдельных участков поверхности на 2 порядка. Данный эффект наблюдался при измерении вольт-амперных характеристик как сэндвич-, так и планарных металл/полимерный композит/металл структур. Такое снижение сопротивления локальных участков композитных пленок, вероятно, связано с измельчением и переориентацией углеродных нанотрубок, а также изменением механических напряжений между ними и полимерной матрицей в ходе проделанных манипуляций, что могло повлиять на электронную структуру включений углеродных нанотрубок.

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