Electric-Field Regulation of Adhesion/De-Adhesion/Release Capacity of Transparent and Electrochromic Adhesive
© 2025 Wiley‐VCH GmbH.
| Publié dans: | Advanced materials (Deerfield Beach, Fla.). - 1998. - (2025) vom: 08. Apr., Seite e2500648 |
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| Auteur principal: | |
| Autres auteurs: | , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2025
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| Accès à la collection: | Advanced materials (Deerfield Beach, Fla.) |
| Sujets: | Journal Article electric regulation electric release electrochromism supramolecular adhesion transparent adhesive |
| Résumé: | © 2025 Wiley‐VCH GmbH. Removing adhesive nondestructively and intact from the adhered surface is a difficult challenge for advanced adhesive materials. Compared with the commonly used thermal or chemical release, the controlled adhesive release via electric-field offers practical application advantages. However, a noninvasive release mode such as this has not been available for the de-bonding of supramolecular adhesives that originate from small organic molecules. Herein, a conductive hydrogel with surface adhesion and electric field-triggered de-adhesion and release is fabricated from thioctic acid (TA) and L-arginine (LA). The non-covalent intermolecular attractions of poly[TA-LA], especially its electrostatic interactions, not only endow it with useful bulk-state properties and strong adhesion (up to 363.3 kPa) but also generate electric responsiveness for on-demand de-adhesion and release. The poly[TA-LA] adhesive layer can be easily released within a short time (<60 s) under a mild voltage (5≈10 V). After a combined experimental and theoretical investigation, It is concluded that the adhesive-layer morphological and mechanical changes, activated by a weak current (1.1≈3.2 mA), are responsible for the adhesion failure, which takes place primarily at the anode. Importantly, rapid electric release of poly[TA-LA] is applicable at low temperatures (5 V, 60 s, -40 °C) or underwater (5 V, 60 s, 25 °C) |
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| Description: | Date Revised 09.04.2025 published: Print-Electronic Citation Status Publisher |
| ISSN: | 1521-4095 |
| DOI: | 10.1002/adma.202500648 |