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Article

Influence of Surface Energy and Phase Composition on Electroadhesive Interactions

by
Konstantin I. Sharov
,
Valentina Yu. Stepanenko
,
Ramil R. Khasbiullin
,
Vladimir V. Matveev
,
Uliana V. Nikulova
and
Aleksey V. Shapagin
*
Frumkin Institute of Physical Chemistry, Electrochemistry Russian Academy of Sciences (IPCE RAS), 119071 Moscow, Russia
*
Author to whom correspondence should be addressed.
Polymers 2025, 17(20), 2739; https://doi.org/10.3390/polym17202739 (registering DOI)
Submission received: 15 September 2025 / Revised: 7 October 2025 / Accepted: 10 October 2025 / Published: 13 October 2025

Abstract

The aim of the study is to investigate the influence of the physicochemical characteristics of the molecular and supramolecular structure of polymers on electroadhesive interactions and their change under the action of a constant electric field. Currently, this effect is modeled in electroadhesion studies, but the range of variable parameters is limited and includes permittivity, moisture content, and surface roughness. It is important to consider other physicochemical parameters, such as material crystallinity and surface characteristics, changes in which can affect the magnitude of electroadhesive forces. In this study, the electric field strength was varied by altering the constant voltage in the range of 3–8 kV. Polyethylene, ethylene-vinyl acetate copolymers, and polyvinyl acetate were used as substrates for adhesive systems. The influence of the concentration of vinyl acetate groups, which determine the energy characteristics of the surface, and the degree of crystallinity on electroadhesive interactions under conditions of an external constant electric field and without it was traced. The degree of crystallinity was varied both by the cooling rate and the orientation during drawing. It was shown that by changing the polar component of the surface energy and the proportion of the crystalline phase in the substrate, electroadhesive interactions can be increased by 4 times to 120 Pa compared to polyethylene. The obtained laws are explained by the local dipoles induced by polar functional groups, which enhance the polymer’s surface interactions with other materials and external fields. At the same time, the fixation of macromolecules in crystalline regions complicates polarization under the influence of an electric field.
Keywords: electroadhesion; EVA; LDPE; surface energy; polar groups; crystallinity; electric field electroadhesion; EVA; LDPE; surface energy; polar groups; crystallinity; electric field

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MDPI and ACS Style

Sharov, K.I.; Stepanenko, V.Y.; Khasbiullin, R.R.; Matveev, V.V.; Nikulova, U.V.; Shapagin, A.V. Influence of Surface Energy and Phase Composition on Electroadhesive Interactions. Polymers 2025, 17, 2739. https://doi.org/10.3390/polym17202739

AMA Style

Sharov KI, Stepanenko VY, Khasbiullin RR, Matveev VV, Nikulova UV, Shapagin AV. Influence of Surface Energy and Phase Composition on Electroadhesive Interactions. Polymers. 2025; 17(20):2739. https://doi.org/10.3390/polym17202739

Chicago/Turabian Style

Sharov, Konstantin I., Valentina Yu. Stepanenko, Ramil R. Khasbiullin, Vladimir V. Matveev, Uliana V. Nikulova, and Aleksey V. Shapagin. 2025. "Influence of Surface Energy and Phase Composition on Electroadhesive Interactions" Polymers 17, no. 20: 2739. https://doi.org/10.3390/polym17202739

APA Style

Sharov, K. I., Stepanenko, V. Y., Khasbiullin, R. R., Matveev, V. V., Nikulova, U. V., & Shapagin, A. V. (2025). Influence of Surface Energy and Phase Composition on Electroadhesive Interactions. Polymers, 17(20), 2739. https://doi.org/10.3390/polym17202739

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