Supramolecular Pressure‐Sensitive Adhesives with Rapid, Strong, Water‐Resistant, and Underwater Adhesion
Jialing Li, Yunfei Zhang, Qiao Zhang, Changyong Cai, Fenfang Li, Shengyi Dong
Abstract
Abstract Supramolecular polymers are materials that exhibit a range of functionalities and thus find wide applicability. In this study, two natural low‐molecular‐weight compounds, thioctic acid ( TA ) and phytic acid ( PA ), are used to fabricate polymeric supramolecular structures. The coexistence of dynamically covalently linked poly( TA ) and hydrogen bond linked poly( PA ) moieties result in copolymeric materials with different dynamic features. The obtained poly( TA ‐ PA )s show rapid and strong adhesion on a variety of natural and artificial surfaces, with high 180° peeling, lap‐shear, and pull‐off strengths over wide temperature (−18 °C to 60 °C) and humidity (20−99%) ranges. The poly( TA ‐ PA )s also display good stability and adhesion in the presence of water, even show stable and long‐lasting underwater adhesion. Hence, the synthesized poly( TA ‐ PA )s, which have high water resistance, are suitable for use as sealing materials in various applications, thus highlighting the applicability of supramolecular polymer materials in underwater surface coatings and adhesion.