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Influence of Surface Energy and Phase Composition on Electroadhesive Interactions
Konstantin I Sharov1, Valentina Yu Stepanenko1, Ramil R Khasbiullin1
1Frumkin Institute of Physical Chemistry, Electrochemistry Russian Academy of Sciences (IPCE RAS), 119071 Moscow, Russia.
Polymers
|October 28, 2025
Summary
Researchers explored how polymer structure affects electroadhesion, finding that surface energy and crystallinity significantly increase adhesive forces. This work expands modeling parameters for electroadhesion applications.
Area of Science:
- Materials Science
- Polymer Science
- Surface Science
Background:
- Current electroadhesion models are limited, primarily considering permittivity, moisture, and roughness.
- Physicochemical parameters like crystallinity and surface characteristics significantly influence electroadhesive forces.
- Understanding these factors is crucial for optimizing polymer-based adhesive systems.
Purpose of the Study:
- To investigate the impact of polymer molecular and supramolecular structure on electroadhesive interactions.
- To analyze how these interactions change under a constant electric field.
- To expand the understanding beyond traditional electroadhesion modeling parameters.
Main Methods:
- Studied polyethylene, ethylene-vinyl acetate copolymers, and polyvinyl acetate.
- Varied electric field strength using constant voltage (3-8 kV).
- Investigated the influence of vinyl acetate group concentration and degree of crystallinity on electroadhesion.
Main Results:
- Electroadhesive interactions increased up to 4 times (120 Pa) compared to polyethylene.
- Changes in polar surface energy and crystalline phase proportion significantly affected adhesion.
- Local dipoles from polar groups enhance surface interactions, while crystalline regions hinder polarization.
Conclusions:
- Polymer crystallinity and surface polar component are key factors in tuning electroadhesive forces.
- Electroadhesion can be significantly enhanced by modifying these physicochemical properties.
- The findings provide a deeper understanding of polymer-field interactions for advanced material design.
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