Electrically Detachable and Fully Recyclable Pressure Sensitive Ionoadhesive Tapes

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 17, 2025

Abstract Detachable pressure sensitive adhesives (PSAs) show great potential in recycling the bonded components toward a circular economy, yet existing challenges such as strict conditions, and time‐consuming, adhesive residues after detachment significantly hinder developments applications. Here, ionoadhesive (PSIA) tape is first designed that has excellent interfacial toughness to various substrates (≈1.8 kJ m −2 ) can be electrically detached with high efficiency under safe voltages (≥90% within 1 min). The unique properties are achieved by introducing liquid‐free lithium salt into poly(ionic liquids) establish multiple non‐covalent interactions (NCIs) including strong electrostatic interactions, moderate bonds, weak ion‐dipole hydrogen bonding interactions. NCIs not only strengthen physical crosslinking networks improve mechanical performances but promote dissociation of ion transport properties. Additionally, elaborately low T g intrinsic modulus features endow PSIA adhesion reworkability, recyclability, re‐adhesion ability. It believed this work offers new strategy for designing detachable fully recyclable tapes, which facilitates reuse reduces industrial waste.

Language: Английский

Boosting Energy Dissipation and Degradation Behaviors: Cation‐π Interactions as a Key to Stimuli Responsive Epoxy Adhesives

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 26, 2025

Abstract Epoxy resins, widely recognized for their stable cross‐linked structures and extensive use as adhesives, face a fundamental challenge in balancing high‐performance attributes with dynamic functionalities. To address this, novel strategy leveraging synergistic effects is proposed to amplify bonds within the resin network. Specifically, an ionic monomer featuring imidazole cations benzene rings synthesized combined four‐arm thiol‐containing ester groups, forming network through dual curing process. This design endows thermoset multiple stimuli‐responsive The groups are pivotal enabling resin's degradability reprocessability, while non‐covalent cation‐π interactions significantly enhance energy dissipation, resulting superior mechanical properties. Notably, not only lower barrier of epoxy thermal reaction but also accelerate hydrolysis via hydrogen bonding. work demonstrates tunable responsive adhesive cyclic features, offering promising candidate functional applications devices beyond. innovative integration provides versatile platform designing next‐generation resins both high performance full life‐cycle sustainability.

Language: Английский