Supramolecular Polymeric Pressure-Sensitive Adhesive That Can Be Directly Operated at Low Temperatures.

Low-temperature adhesion is ubiquitous in daily life and industry. However, most supramolecular adhesives are thermoplastic materials that require heating during the adhesion. Herein, a supramolecular approach is used to construct unique pressure-sensitive adhesives ( PSA s) that can be directly operated at low temperatures (-60 °C). Supramolecular polymerization between phytic acid ( PA ) and water ( H ) endows poly( PA - H )s with excellent mechanical properties and low temperature adhesion capacity. Poly( PA - H )s can easily be processed into PSA tapes, pastes, and particles. Poly( PA - H )s were directly adhered to various surfaces by pressing at low temperatures (0 to -60 °C). No heating or high-temperature-induced solid-liquid transition was required for the low-temperature adhesion of poly( PA - H )s. With the help of structural water units in supramolecular polymers, poly( PA - H )s showed strong, stable, and organic solvent resistant adhesion performances at low temperatures, with adhesion strength of up to 3.61 MPa at -60 °C.